Junctional adhesion molecule A [corrected] expression in human endometrial carcinoma

Area of Science:

• Oncology
• Cell Biology
• Pathology

Background:

• Junctional adhesion molecule A (JAM-A) plays a role in cell-cell contact and tight junction integrity.
• Reduced expression of cell adhesion molecules is often linked to increased invasiveness and higher grade in endometrial carcinoma.

Purpose of the Study:

• To investigate JAM-A expression in human endometrial carcinoma.
• To correlate JAM-A expression with clinicopathologic features, disease stage, and patient survival.

Main Methods:

• Immunohistochemistry was used to evaluate JAM-A expression in tumor tissues.
• Real-time RT-PCR and immunohistochemistry assessed JAM-A in well- and poorly differentiated endometrial adenocarcinoma cell lines cultured in 3D basement membrane.

Main Results:

• JAM-A immunostaining intensity showed a negative correlation with histologic grade, myometrial invasion, and tumor stage.
• Low JAM-A expression was associated with positive vascular space involvement and significantly lower overall and progression-free survival rates.
• Poorly differentiated adenocarcinoma cell lines exhibited significantly lower JAM-A expression compared to well-differentiated ones.

Conclusions:

• Junctional adhesion molecule A expression is diminished in high-grade and advanced endometrial carcinomas.
• Reduced JAM-A expression may serve as a valuable prognostic factor for endometrial carcinoma patients.