Combined oligonucleotide microarray-bioinformatics and constructed membrane arrays to analyze the biological pathways in the carcinogenesis of human lung adenocarcinoma.
The present study systematically explores the biological pathways and altered expression of genes speculatively participating in lung carcinogenesis by using oligonucleotide microarray-bioinformatic analysis methods. The results revealed that 1,396 genes were up-regulated and 1,965 were down-regulated in lung adenocarcinoma carcinogenesis. Gene ontology and relevant bioinformatics tools indicated that the functional category to which the most frequently differentially expressed genes were classified, was to the cytokine-cytokine receptor interaction pathway, focal adhesion pathway and the mitogen-activated protein kinase signaling pathway. Furthermore, we constructed a membrane array, consisting of 51 up-regulated genes in lung adenocarcinoma, in order to verify the biological pathways involved in the carcinogenesis of lung cancer. The analysis of 45 lung adenocarcinoma tissue specimens demonstrated that the genes involved in these three biological pathways had high rates of overexpression. Out of the 51 genes, 17 genes were demonstrated to be overexpressed in all 45 lung adenocarcinoma tissues compared to the paired normal lung tissues. These findings could have implications in understanding the process of lung adenocarcinoma carcinogenesis. Moreover, our developed membrane arrays could be a potentially feasible and promising tool in clinical practice for analyzing the molecular mechanisms of lung adenocarcinoma carcinogenesis.
Graduate Institute of Medicine, College of Medicine, Taiwan, ROC.
Mei-Yin
MY
Chang
Ya-Ping
YP
Yu
Jong-Rung
JR
Tsai
Chau-Chyun
CC
Sheu
Inn-Wen
IW
Chong
Shiu-Ru
SR
Lin
D000230:Adenocarcinoma / Q000235:genetics* / Q000503:physiopathology; D001483:Base Sequence; D019295:Computational Biology; D015536:Down-Regulation; D015972:Gene Expression Regulation, Neoplastic; D023281:Genomics; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics* / Q000503:physiopathology; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000235:genetics; D020411:Oligonucleotide Array Sequence Analysis; D015345:Oligonucleotide Probes; D015854:Up-Regulation
D009363:Neoplasm Proteins; D015345:Oligonucleotide Probes