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Article

A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis

  • Authors:
    • Leilei Guo
    • Chunhua Song
    • Peng Wang
    • Liping Dai
    • Jianying Zhang
    • Kaijuan Wang
  • View Affiliations / Copyright

    Affiliations: Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
  • Pages: 7139-7145
    |
    Published online on: August 24, 2015
       https://doi.org/10.3892/mmr.2015.4242
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Abstract

The aim of the present study was to explore key molecular pathways contributing to gastric cancer (GC) and to construct an interaction network between significant pathways and potential biomarkers. Publicly available gene expression profiles of GSE29272 for GC, and data for the corresponding normal tissue, were downloaded from Gene Expression Omnibus. Pre‑processing and differential analysis were performed with R statistical software packages, and a number of differentially expressed genes (DEGs) were obtained. A functional enrichment analysis was performed for all the DEGs with a BiNGO plug‑in in Cytoscape. Their correlation was analyzed in order to construct a network. The modularity analysis and pathway identification operations were used to identify graph clusters and associated pathways. The underlying molecular mechanisms involving these DEGs were also assessed by data mining. A total of 249 DEGs, which were markedly upregulated and downregulated, were identified. The extracellular region contained the most significantly over‑represented functional terms, with respect to upregulated and downregulated genes, and the closest topological matches were identified for taste transduction and regulation of autophagy. In addition, extracellular matrix‑receptor interactions were identified as the most relevant pathway associated with the progression of GC. The genes for fibronectin 1, secreted phosphoprotein 1, collagen type 4 variant α‑1/2 and thrombospondin 1, which are involved in the pathways, may be considered as potential therapeutic targets for GC. A series of associations between candidate genes and key pathways were also identified for GC, and their correlation may provide novel insights into the pathogenesis of GC.
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Copy and paste a formatted citation
Spandidos Publications style
Guo L, Song C, Wang P, Dai L, Zhang J and Wang K: A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis. Mol Med Rep 12: 7139-7145, 2015.
APA
Guo, L., Song, C., Wang, P., Dai, L., Zhang, J., & Wang, K. (2015). A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis. Molecular Medicine Reports, 12, 7139-7145. https://doi.org/10.3892/mmr.2015.4242
MLA
Guo, L., Song, C., Wang, P., Dai, L., Zhang, J., Wang, K."A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis". Molecular Medicine Reports 12.5 (2015): 7139-7145.
Chicago
Guo, L., Song, C., Wang, P., Dai, L., Zhang, J., Wang, K."A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis". Molecular Medicine Reports 12, no. 5 (2015): 7139-7145. https://doi.org/10.3892/mmr.2015.4242
Copy and paste a formatted citation
x
Spandidos Publications style
Guo L, Song C, Wang P, Dai L, Zhang J and Wang K: A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis. Mol Med Rep 12: 7139-7145, 2015.
APA
Guo, L., Song, C., Wang, P., Dai, L., Zhang, J., & Wang, K. (2015). A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis. Molecular Medicine Reports, 12, 7139-7145. https://doi.org/10.3892/mmr.2015.4242
MLA
Guo, L., Song, C., Wang, P., Dai, L., Zhang, J., Wang, K."A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis". Molecular Medicine Reports 12.5 (2015): 7139-7145.
Chicago
Guo, L., Song, C., Wang, P., Dai, L., Zhang, J., Wang, K."A systems biology approach to detect key pathways and interaction networks in gastric cancer on the basis of microarray analysis". Molecular Medicine Reports 12, no. 5 (2015): 7139-7145. https://doi.org/10.3892/mmr.2015.4242
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