TY - JOUR
T1 - Global detection of molecular changes reveals concurrent alteration of several biological pathways in nonsmall cell lung cancer cells
AU - Ju, Z.
AU - Kapoor, M.
AU - Newton, K.
AU - Cheon, K.
AU - Ramaswamy, A.
AU - Lotan, R.
AU - Strong, L. C.
AU - Koo, J. S.
N1 - Funding Information:
Acknowledgements We thank Dr. Guillermina Lozano for her valuable suggestions regarding experiments and this manuscript. This work was supported by National Cancer Institute grant N01-CN-05023-39 (to L.S.), U.S. Department of Defense grant DAMD 17-02-1-0706 01 (to J.S.K.), and National Institute of Environmental Health Sciences grant 5K22-ES-000362 (to J.S.K.)
PY - 2005/9
Y1 - 2005/9
N2 - To identify the molecular changes that occur in non-small cell lung carcinoma (NSCLC), we compared the gene expression profile of the NCI-H292 (H292) NSCLC cell line with that of normal human tracheobronchial epithelial (NHTBE) cells. The NHTBE cells were grown in a three-dimensional organotypic culture system that permits maintenance of the normal pseudostratified mucociliary phenotype characteristic of bronchial epithelium in vivo. Microarray analysis using the Affymetrix oligonucleotide chip U95Av2 revealed that 1,683 genes showed a >1.5-fold change in expression in the H292 cell line relative to the NHTBE cells. Specifically, 418 genes were downregulated and 1,265 were upregulated in the H292 cells. The expression data for selected genes were validated in several different NSCLC cell lines using quantitative real-time PCR and Western analysis. Further analysis of the differentially expressed genes indicated that WNT responses, apoptosis, cell cycle regulation and cell proliferation were significantly altered in the H292 cells. Functional analysis using fluorescence-activated cell sorting confirmed concurrent changes in the activity of these pathways in the H292 line. These findings show that (1) NSCLC cells display deregulation of the WNT, apoptosis, proliferation and cell cycle pathways, as has been found in many other types of cancer cells, and (2) that organotypically cultured NHTBE cells can be used as a reference to identify genes and pathways that are differentially expressed in tumor cells derived from bronchogenic epithelium.
AB - To identify the molecular changes that occur in non-small cell lung carcinoma (NSCLC), we compared the gene expression profile of the NCI-H292 (H292) NSCLC cell line with that of normal human tracheobronchial epithelial (NHTBE) cells. The NHTBE cells were grown in a three-dimensional organotypic culture system that permits maintenance of the normal pseudostratified mucociliary phenotype characteristic of bronchial epithelium in vivo. Microarray analysis using the Affymetrix oligonucleotide chip U95Av2 revealed that 1,683 genes showed a >1.5-fold change in expression in the H292 cell line relative to the NHTBE cells. Specifically, 418 genes were downregulated and 1,265 were upregulated in the H292 cells. The expression data for selected genes were validated in several different NSCLC cell lines using quantitative real-time PCR and Western analysis. Further analysis of the differentially expressed genes indicated that WNT responses, apoptosis, cell cycle regulation and cell proliferation were significantly altered in the H292 cells. Functional analysis using fluorescence-activated cell sorting confirmed concurrent changes in the activity of these pathways in the H292 line. These findings show that (1) NSCLC cells display deregulation of the WNT, apoptosis, proliferation and cell cycle pathways, as has been found in many other types of cancer cells, and (2) that organotypically cultured NHTBE cells can be used as a reference to identify genes and pathways that are differentially expressed in tumor cells derived from bronchogenic epithelium.
KW - Biological pathways
KW - Gene expression profile
KW - Microarray analysis
KW - Nonsmall cell lung cancer (NSCLC)
KW - Normal human tracheobronchial epithelium (NHTBE)
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U2 - 10.1007/s00438-005-0014-7
DO - 10.1007/s00438-005-0014-7
M3 - Article
C2 - 16049682
AN - SCOPUS:27144469822
SN - 1617-4615
VL - 274
SP - 141
EP - 154
JO - Molecular Genetics and Genomics
JF - Molecular Genetics and Genomics
IS - 2
ER -