Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA218795 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:microRNA profiling of lung adenocarcinomas, induced by cRaf overexpression in lung epithelium (Affymetrix)
| PRJNA218797 | ENA
Project description:Smoking is a significant risk factor for lung cancer, the leading cause of cancer-related deaths worldwide. While microRNAs are regulators of many airway gene-expression changes induced by smoking, their role in modulating changes associated with lung cancer in these cells remains unknown. Here, we use next-generation sequencing of small RNAs in the airway to identify miR-4423 as a novel primate-specific microRNA associated with lung cancer and expressed primarily in mucociliary epithelium. The endogenous expression of miR-4423 increases as bronchial epithelial cells undergo differentiation into mucociliary epithelium in vitro and its overexpression during this process causes an increase in the number of ciliated cells. Furthermore, expression of miR-4423 is reduced in most lung tumors and in cytologically normal epithelium of the mainstem bronchus of smokers with lung cancer. In addition, ectopic expression of miR-4423 in a subset of lung cancer cell lines reduces their anchorage-independent growth and significantly decreases the size of the tumors formed in a mouse xenograft model. Consistent with these phenotypes, overexpression of miR-4423 induces a differentiated-like pattern of airway epithelium gene expression and reverses the expression of many genes that are altered in lung cancer. Together, our results indicate that miR-4423 is a novel regulator of airway epithelium differentiation and that the abrogation of its function contributes to lung carcinogenesis. Small RNA 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. MicroRNA hsa-miR-4423 was over expressed in H1299, Calu6, SW900 and H2170 lung cancer cell lines.
2013-10-08 | E-GEOD-32726 | biostudies-arrayexpress
Project description:Smoking is a significant risk factor for lung cancer, the leading cause of cancer-related deaths worldwide. While microRNAs are regulators of many airway gene-expression changes induced by smoking, their role in modulating changes associated with lung cancer in these cells remains unknown. Here, we use next-generation sequencing of small RNAs in the airway to identify miR-4423 as a novel primate-specific microRNA associated with lung cancer and expressed primarily in mucociliary epithelium. The endogenous expression of miR-4423 increases as bronchial epithelial cells undergo differentiation into mucociliary epithelium in vitro and its overexpression during this process causes an increase in the number of ciliated cells. Furthermore, expression of miR-4423 is reduced in most lung tumors and in cytologically normal epithelium of the mainstem bronchus of smokers with lung cancer. In addition, ectopic expression of miR-4423 in a subset of lung cancer cell lines reduces their anchorage-independent growth and significantly decreases the size of the tumors formed in a mouse xenograft model. Consistent with these phenotypes, overexpression of miR-4423 induces a differentiated-like pattern of airway epithelium gene expression and reverses the expression of many genes that are altered in lung cancer. Together, our results indicate that miR-4423 is a novel regulator of airway epithelium differentiation and that the abrogation of its function contributes to lung carcinogenesis. Small RNA 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. MicroRNA hsa-miR-4423 was over expressed in H1299, Calu6, SW900 and H2170 lung cancer cell lines.
2013-10-08 | E-GEOD-48796 | biostudies-arrayexpress
Project description:The transcriptional regulator c-Myc is the most frequently deregulated oncogene in human tumors. Targeted overexpression of this gene in mice results in distinct types of lung adenocarcinomas. By using microarray technology, alterations in the expression of genes were captured based on a female transgenic mouse model in which, indeed, c-Myc overexpression in alveolar epithelium results in the development of bronchiolo-alveolar carcinoma (BAC) and papillary adenocarcinoma (PLAC). In this study, we analyzed exclusively the promoters of induced genes by different in silico methods in order to elucidate the c-Myc transcriptional regulatory network. Keywords: c-myc transgenic versus non-transgenic
2008-05-31 | GSE10954 | GEO
Project description:We identified candidate protein biomarkers to distinguish lung adenocarcinomas from benign nodules. We employed shotgun proteomics using a multidimensional peptide separation approach coupled to tandem mass spectrometry (LC-MS/MS) to characterize proteomes of a collection of 34 benign lung nodules. The benign lung nodule inventories were compared to inventories from early stage lung adenocarcinomas, from 24 patients with non-adjuvant treatment following the resection, and to inventories from normal tissue collected from 10 patients as bronchial and alveolar epithelium to identify biomarkers.We developed PRM assays to quantify a subset of 43 candidate biomarker proteins via 170 tryptic peptides in a single LC-PRM-MS run using a validation cohort of 20 benign nodules, 20 adenocarcinoma, and 20 normal lung tissues.
2016-10-09 | MSV000080236 | MassIVE
Project description:Global microRNA expression profiling of microdissected pancreatic tissues were collected using Agilent miRNA microarrays (G4470B, Sanger 10.1) carrying 723 individual human miRNA probes. Four different sources of RNA were analyzed: microdissected normal pancreatic ductal cells (ND, n=4),microdissected acinar cells (AC, n=4), macrodissected chronic pancreatitis (CP, n=5) and micordissected xenograft tissues derived from primary pancreatic ductal adenocarcinomas (PDAC, n=5).
2011-09-28 | GSE25820 | GEO
Project description:The transcriptional regulator c-Myc is the most frequently deregulated oncogene in human tumors. Targeted overexpression of this gene in mice results in distinct types of lung adenocarcinomas. By using microarray technology, alterations in the expression of genes were captured based on a female transgenic mouse model in which, indeed, c-Myc overexpression in alveolar epithelium results in the development of bronchiolo-alveolar carcinoma (BAC) and papillary adenocarcinoma (PLAC). In this study, we analyzed exclusively the promoters of induced genes by different in silico methods in order to elucidate the c-Myc transcriptional regulatory network. Experiment Overall Design: For gene expression analysis, RNA was isolated from lung tissue of either 16 c-Myc-transgenic or 16 non-transgenic control female mice. Identical amounts of RNA from 4 individuals of one group were pooled, such that 4 pools of 4 mice per group could be analyzed. Each pool was analysed in one microarray experiment.
2008-06-18 | E-GEOD-10954 | biostudies-arrayexpress
Project description:Global microRNA expression profiling of serum were collected using Agilent miRNA microarrays (G4471A Human, Amadid 29297, Sanger 14) carrying 887 individual human miRNA probes. Two different sources of RNA were analyzed: serum from NMRI-nu/nu mice carrying a xenograft tumor derived from human primary pancreatic ductal adenocarcinomas (CA, n=6) and serum from tumor free control NMRI-nu/nu mice (N, n=6)
2013-07-01 | GSE34052 | GEO
Project description:Smoking is a significant risk factor for lung cancer, the leading cause of cancer-related deaths worldwide. While microRNAs are regulators of many airway gene-expression changes induced by smoking, their role in modulating changes associated with lung cancer in these cells remains unknown. Here, we use next-generation sequencing of small RNAs in the airway to identify miR-4423 as a novel primate-specific microRNA associated with lung cancer and expressed primarily in mucociliary epithelium. The endogenous expression of miR-4423 increases as bronchial epithelial cells undergo differentiation into mucociliary epithelium in vitro and its overexpression during this process causes an increase in the number of ciliated cells. Furthermore, expression of miR-4423 is reduced in most lung tumors and in cytologically normal epithelium of the mainstem bronchus of smokers with lung cancer. In addition, ectopic expression of miR-4423 in a subset of lung cancer cell lines reduces their anchorage-independent growth and significantly decreases the size of the tumors formed in a mouse xenograft model. Consistent with these phenotypes, overexpression of miR-4423 induces a differentiated-like pattern of airway epithelium gene expression and reverses the expression of many genes that are altered in lung cancer. Together, our results indicate that miR-4423 is a novel regulator of airway epithelium differentiation and that the abrogation of its function contributes to lung carcinogenesis.
2013-10-08 | GSE48796 | GEO