HMGA2 as a prognostic and immune biomarker in hepatocellular carcinoma: Comprehensive analysis of the HMG family and experiments validation

The molecular mechanisms underlying hepatocellular carcinoma (HCC) are complex and not fully understood. This study aims to explore the expression and clinical significance of High Mobility Group (HMG) proteins in HCC to identify potential prognostic biomarkers and therapeutic targets. Bioinformatic analyses were performed using data from The Cancer Genome Atlas (TCGA) and other databases. Expression levels of HMGs were validated in HCC cell lines using qRT-PCR, and functional studies were conducted by knocking down HMGA2.HMG family members, particularly HMGA1, HMGA2, HMGB2, and HMGN1, were significantly upregulated in HCC tissues compared to normal tissues. High expression levels of these proteins were associated with poor overall survival and disease-specific survival in HCC patients. Knockdown of HMGA2 in HCC cell lines led to reduced cell proliferation, migration, and invasion. HMGA2, along with other HMG family members, emerges as a potential prognostic biomarker and therapeutic target in HCC. This study provides new insights into the role of HMG proteins in HCC progression.