A Comprehensive Analysis of HOXB13 Expression in Hepatocellular Carcinoma

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Hepatocellular carcinoma (HCC) is a prevalent global malignancy with diverse etiologies.
• Identifying novel therapeutic targets is crucial for improving HCC patient outcomes.

Purpose of the Study:

• To investigate the expression patterns of HomeoboxB13 (HOXB13) in HCC.
• To elucidate the role of HOXB13 in HCC progression, metastasis, and immune microenvironment.

Main Methods:

• Utilized public gene expression databases (TIMER, UALCAN, KM, OSlihc, LinkedOmics) and immunohistochemistry for clinical significance analysis.
• Performed cell invasion and migration assays in HCC cell lines with HOXB13-siRNA transfection.
• Analyzed correlations between HOXB13, MMP9, E2F1, and MEIS1 expression.

Main Results:

• HOXB13 expression was elevated in fibrolamellar carcinoma and correlated with lymph node metastasis, advanced stage, and higher tumor grade.
• HOXB13 expression showed positive correlations with B cells, macrophages, myeloid dendritic cells, neutrophils, CD4+ T cells, MMP9, E2F1, and MEIS1.
• HOXB13 downregulation in HCC cell lines significantly impacted cell viability and wound healing.

Conclusions:

• HOXB13 overexpression is associated with unfavorable prognosis in HCC patients.
• HOXB13 influences HCC cell behavior and potentially modulates the tumor immune microenvironment.
• Further in vivo research is warranted to fully understand HOXB13's biological role and mechanisms in HCC.