Comprehensive network analysis of genes expressed in human oropharyngeal cancer

Yang Yu1, Simin Li1, Han Wang2

  • 1Department of Periodontology, The Stomatology Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, Heilongjiang, China.

Abstract

Insights

This study built a gene co-expression network to identify molecular biomarkers for oropharyngeal cancer (OPC). The network revealed key genes involved in cell cycle, immune system, and organ morphogenesis, aiding OPC research.

Area of Science:

  • Oncology
  • Genomics
  • Bioinformatics

Background:

  • Oropharyngeal cancer (OPC) is a significant global health concern, ranking as the eighth most common cancer worldwide.
  • Limited knowledge exists regarding the specific genes driving OPC development, necessitating further molecular investigation.

Purpose of the Study:

  • To construct a gene co-expression network to expand understanding of molecular biomarkers in OPC.
  • To identify key biological processes and genes implicated in OPC pathogenesis.

Main Methods:

  • Utilized microarray data from NCBI GEO DataSets (Series GSE55550) for HPV-active, -inactive, and -negative OPC, alongside normal tissues.
  • Performed co-expression analysis using the Pearson correlation coefficient (PCC) with a mutual rank (MR)-based cutoff and 13 guide genes.

Main Results:

  • Identified three distinct clusters within the OPC co-expression subnetwork: cell cycle (62 nodes, 125 edges), immune system (44 nodes, 70 edges), and organ morphogenesis (128 nodes, 215 edges).
  • These clusters highlight critical biological processes influenced by specific gene sets in OPC development.

Conclusions:

  • The developed co-expression network provides a valuable resource for OPC researchers.
  • Facilitates deeper elucidation of complex biological events, contributing to improved prevention and prediction strategies for oropharyngeal cancer.