Analysis of hepatocellular carcinoma and metastatic hepatic carcinoma via functional modules in a protein-protein interaction network.

Abstract:

INTRODUCTION:This study aims to identify protein clusters with potential functional relevance in the pathogenesis of hepatocellular carcinoma (HCC) and metastatic hepatic carcinoma using network analysis. MATERIALS AND METHODS:We used human protein interaction data to build a protein-protein interaction network with Cytoscape and then derived functional clusters using MCODE. Combining the gene expression profiles, we calculated the functional scores for the clusters and selected statistically significant clusters. Meanwhile, Gene Ontology was used to assess the functionality of these clusters. Finally, a support vector machine was trained on the gold standard data sets. RESULTS:The differentially expressed genes of HCC were mainly involved in metabolic and signaling processes. We acquired 13 significant modules from the gene expression profiles. The area under the curve value based on the differentially expressed modules were 98.31%, which outweighed the classification with DEGs. CONCLUSIONS:Differentially expressed modules are valuable to screen biomarkers combined with functional modules.

journal_name

J Cancer Res Ther

authors

Pan J,Cong Z,Zhong M,Sun Y

doi

10.4103/0973-1482.145866

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

C186-94

eissn

0973-1482

issn

1998-4138

pii

JCanResTher_2014_10_7_186_145866

journal_volume

10 Suppl

pub_type

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