Hepatocellular carcinoma may display elevated nestin expression in endothelial cells: experimental study

Area of Science:

• Cell Biology
• Oncology
• Histopathology

Background:

• Nestin, a class VI intermediate filament protein, is expressed in fetal liver but scarce in adult liver endothelium.
• Nestin-positive parenchymal cells, considered hepatic stem cells or hepatoblasts, are implicated in liver regeneration and hepatocellular carcinogenesis.
• Recent findings show nestin-positive parenchymal cells in hepatocellular carcinoma.

Purpose of the Study:

• To investigate nestin expression in hepatocellular carcinoma as a positive control for immunohistochemistry.
• To explore the role of nestin in hepatocellular carcinoma, particularly its expression in endothelial cells.

Main Methods:

• Immunohistochemistry using confocal microscopy was performed on hepatocellular carcinoma sections.
• Nestin expression was analyzed in endothelial cells within the tumor microenvironment.

Main Results:

• A novel, conspicuous pattern resembling liver sinusoid-like cytoarchitecture was observed in nestin-stained endothelial cells.
• Nestin expression was detected in endothelial cells, suggesting their involvement in tumor angiogenesis.

Conclusions:

• Nestin-positive endothelial cells may reside in niches of immature or proliferative cells.
• The observed pattern enhances the understanding of angiogenesis in hepatocellular carcinoma.
• Hepatocellular carcinoma serves as an effective positive control for nestin staining in fluorescent immunohistochemistry.