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A Journal on Internal Medicine

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Minerva Medica 2012 June;103(3):151-64

language: English

Identification of Wnt pathway, uPA, PAI-1, MT1-MMP, S100A4 and CXCR4 associated with enhanced metastasis of human large cell lung cancer by DNA microarray

Qiu X., Guo S., Wu H., Chen J., Zhou Q.

Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Heping District, Tianjin China


AIM: The aim of this paper was to investigate the differentially expressed genes in large cell lung cancer cell lines with different metastatic potential, and to screen out new candidate genes related to metastasis of lung cancer.
METHODS:The total RNAs of low and high metastatic large cell lung cancer cell lines (NL9980 and L9981) were extracted and processed, then hybridized to Affymetrix HG U133 Plus 2.0 array. The hybridization signals were scanned and compared to find out the differentially expressed genes. Chosen genes were verified by Western Blot. Bioinformatics were used to analyze the functions and related pathways of the genes.
RESULTS:There were 933 differentially expressed genes between NL9980 and L9981 cell lines. In the high metastatic cell line L9981, 672 genes were up-regulated and 260 genes were down-regulated compared with the low metastatic cell line NL9980. The differentially expressed genes were mainly associated with binding, catalytic activity, signal transducer activity and transporter activity, and mainly involved in pathways including, pathways in cancer, focal adhesion, regulation of actin cytoskeleton, ECM-receptor interaction.
CONCLUSION: Differentially expressed genes with the functions including binding, catalytic activity, signal transducer activity and transporter activity may promote metastasis of lung cancer cells through complicated networks including Wnt pathway and metastasis-related genes such as uPA, PAI-1, MT1-MMP, S100A4 and CXCR4.

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