Decrease in ICAM-1 expression on gastric cancer cells is correlated with lymph node metastasis.

Area of Science:

• Oncology
• Immunology
• Cell Biology

Background:

• Lymph node metastasis is a common complication in gastric cancer.
• The underlying mechanisms of lymph node metastasis are not fully understood.
• The interaction between cancer cells and lymphocytes (immunosurveillance) may influence metastasis.

Purpose of the Study:

• To investigate the association between lymph node metastasis and intercellular adhesion molecule-1 (ICAM-1) in gastric cancer.
• To explore the role of ICAM-1 in the immunosurveillance system between tumor cells and cytotoxic lymphocytes.
• To correlate ICAM-1 expression with clinicopathologic factors and tumor-infiltrating lymphocytes (TILs).

Main Methods:

• Analysis of 143 gastric cancer specimens using monoclonal antibody staining for ICAM-1.
• Evaluation of ICAM-1 expression levels in relation to lymph node metastasis.
• Assessment of the correlation between ICAM-1 expression, clinicopathologic features, and TIL infiltration.

Main Results:

• Gastric cancer cells with lymph node metastasis showed significantly decreased ICAM-1 expression.
• Tumor-infiltrating lymphocyte (TIL) infiltration was associated with ICAM-1 expression levels.
• Patients with ICAM-1-negative tumors had a poorer prognosis compared to those with ICAM-1-positive tumors.

Conclusions:

• ICAM-1 expression on gastric cancer cells is inversely correlated with lymph node metastasis.
• The host immunosurveillance system, involving ICAM-1 and lymphocytes, appears to influence lymph node metastasis in gastric cancer.
• ICAM-1 status may serve as a prognostic marker in gastric cancer.