Gal-3 Protein Expression and Localization in Prostate Tumours.

Area of Science:

• Oncology
• Biochemistry
• Molecular Biology

Background:

• Galectin-3 (Gal-3) is implicated in cell survival, splicing, and cell interactions.
• Gal-3 exhibits context-dependent roles in cancer, acting as either tumor-suppressive or tumor-promoting.
• Previous studies highlighted Gal-3's diagnostic potential in urine for prostate cancer (PCa).

Purpose of the Study:

• To investigate Gal-3 protein expression immunohistochemically in PCa and normal prostate tissues.
• To evaluate the correlation between Gal-3 expression, PCa progression, and patient outcomes.
• To determine the cellular localization patterns of Gal-3 in different prostate tissue types.

Main Methods:

• Immunohistochemical analysis of Gal-3 protein expression.
• Evaluation in 48 tumor, 8 normal, and 14 adjacent-normal prostate tissues.
• Correlation analysis with Gleason score (GS) and pT stages.

Main Results:

• Decreased Gal-3 staining was observed in tumor tissues compared to normal tissues.
• Gal-3 expression was reduced in tumors with GS 5-8 and pT2/pT3 stages.
• Nuclear exclusion of Gal-3 was noted in tumor tissues; no significant impact on survival or relapse was found.

Conclusions:

• Gal-3 protein expression is decreased in prostate tumors.
• Gal-3's altered cellular localization in tumors may be significant.
• Gal-3 remains a promising diagnostic marker for PCa, despite lack of correlation with progression or survival.