Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

CaArray_jacks-00113: Murine KRASLA lung cancer gene expression

ABSTRACT: Tumors from 5-6 month old KrasLA mice were dissected. Gene expression analysis on U74A affy chips. 19 normal lungs from age matched controls were also includeed **NOTE: Migrated from caArray 1.x, identifier='gov.nih.nci.ncicb.caarray:Experiment:1015897590231167:1' jacks-00113 Assay Type: Gene Expression Provider: Affymetrix Array Designs: mg_u74av2 Organism: Mus musculus (ncbitax) Tissue Sites: Lung Material Types: synthetic_DNA, synthetic_RNA, organism_part Disease States: normal lung, lung cancer

ORGANISM(S): Mus musculus

SUBMITTER: Mervi Heiskanen

PROVIDER: E-GEOD-70271 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Comparison of gene expression and DNA copy number changes in a murine model of lung cancer.

Sweet-Cordero Alejandro A Tseng George C GC You Han H Douglass Margaret M Huey Bing B Albertson Donna D Jacks Tyler T

Genes, chromosomes & cancer 20060401 4

Activation of oncogenic Kras in murine lung leads to the development of numerous small adenomas, only some of which progress over time to overt adenocarcinoma. Thus, although Kras is the initiating oncogene, it is likely that secondary genetic events are required for progression from adenoma to adenocarcinoma. Some of these secondary events may also be important in human lung adenocarcinoma. By comparing gene expression profiles with DNA copy number changes, we sought to identify genes that play ...[more]

PMID: 16323170

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Project description:A key step in bringing gene expression data into clinical practice is the conduct of large studies to confirm preliminary models. The performance of such confirmatory studies and the transition to clinical practice requires that microarray data from different laboratories are comparable and reproducible. We designed a study to assess the comparability of data from four laboratories that will conduct a larger microarray profiling confirmation project in lung adenocarcinomas. To test the feasibility of combining data across laboratories, frozen tumor tissues, cell line pellets, and purified RNA samples were analyzed at each of the four laboratories. Samples of each type and several subsamples from each tumor and each cell line were blinded before being distributed. The laboratories followed a common protocol for all steps of tissue processing, RNA extraction, and microarray analysis using Affymetrix Human Genome U133A arrays. High within-laboratory and between-laboratory correlations were observed on the purified RNA samples, the cell lines, and the frozen tumor tissues. Intraclass correlation within laboratories was only slightly stronger than between laboratories, and the intraclass correlation tended to be weakest for genes expressed at low levels and showing small variation. Finally, hierarchical cluster analysis revealed that the repeated samples clustered together regardless of the laboratory in which the experiments were done. The findings indicate that under properly controlled conditions it is feasible to perform complete tumor microarray analysis, from tissue processing to hybridization and scanning, at multiple independent laboratories for a single study. dobbi-00100 Assay Type: Gene Expression Provider: Affymetrix Array Designs: HG-U133A Organism: Homo sapiens (ncbitax) Tissue Sites: Kidney, Lung, Stomach, Uterus, Liver, Lymphoid tissue, Ovary, Skin, Adrenal Gland, Lymph_Node Material Types: cell, nuclear_RNA, synthetic_RNA, organism_part, total_RNA Disease States: Recurrent Renal Cell Carcinoma, Squamous Cell Carcinoma,Conventional_Clear_Cell_Renal_Cell_Carcinoma,Gastrointestinal_Stromal_Tumor, Lung_Adenocarcinoma, Leiomyoma, Non neoplastic liver with cirrosis, Stomach Adenocarcinoma, Large Cell Lymphoma, Ovarian Adenocarcinoma, Melanoma, Malignant G1 Stromal Tumor, Adrenal Cortical Adenoma, Metastatic Renal Cell Carcinoma, Malignant Melanoma

Dataset Information

CaArray_jacks-00113: Murine KRASLA lung cancer gene expression

Publications

Comparison of gene expression and DNA copy number changes in a murine model of lung cancer.

Similar Datasets

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