Th22 cells are associated with hepatocellular carcinoma development and progression

Area of Science:

• Immunology
• Oncology
• Hepatology

Background:

• CD4(+) T helper 22 (Th22) cells are key drivers of inflammation.
• The role of Th22 cells in hepatocellular carcinoma (HCC) pathogenesis is unexplored.
• Interleukin-22 (IL-22) is an effector cytokine produced by Th22 cells.

Purpose of the Study:

• To investigate the biological function of Th22 cells and IL-22 in HCC.
• To determine the association between Th22 cells, IL-22, and HCC progression.

Main Methods:

• Flow cytometry analyzed Th22 and Th17 cell frequencies in 45 HCC patients and 19 controls.
• ELISA measured serum IL-22 levels.
• Immunohistochemistry and RT-PCR assessed IL-22 expression in tissue samples.

Main Results:

• HCC patients showed significantly higher circulating Th22 cells, Th17 cells, and serum IL-22 compared to controls.
• Th22 cell counts correlated positively with IL-22 levels in HCC patients.
• IL-22 expression (protein and mRNA) was highest in HCC tissues and increased with tumor stage (III-IV vs. I-II).

Conclusions:

• Increased circulating Th22 cells and IL-22 are implicated in HCC pathogenesis.
• Th22 cells and IL-22 represent potential cellular targets for HCC therapeutic interventions.