How Hepatitis C Virus Leads to Hepatocellular Carcinoma: A Network-Based Study

Area of Science:

• Oncology
• Virology
• Bioinformatics

Background:

• Hepatocellular carcinoma (HCC) is a major global health concern, frequently linked to Hepatitis C virus (HCV) infection.
• The precise molecular mechanisms by which HCV contributes to HCC development and progression remain incompletely understood.

Purpose of the Study:

• To elucidate the role of HCV in HCC initiation and invasion.
• To analyze protein-protein interaction (PPI) networks for key molecular players.

Main Methods:

• Constructed PPI networks for chronic HCV and HCC using GEO2R.
• Identified differentially expressed genes (DEGs) and their interactions via STRING and GeneMANIA.
• Performed functional annotation using g:Profiler and network analysis with Cytoscape.
• Reconstructed miRNA-Hubgene networks using miRTarBase to identify key regulatory miRNAs.

Main Results:

• Identified c-Jun as a critical hub gene in both HCV and HCC networks.
• Recognized hsa-miR-34a, hsa-miR-155, hsa-miR-24, hsa-miR-744, and hsa-miR-92a as key hub miRNAs correlated with HCV and HCC.
• Found significant overlap in differentially expressed miRNA profiles between HCV-infected and HCC cells.

Conclusions:

• Identified crucial genes and miRNAs implicated in HCV-associated HCC initiation and progression.
• Provides insights into the molecular pathways driving HCC in HCV-infected individuals.