Expression of nectin-4 in prostate cancer

Area of Science:

• Urology
• Oncology
• Molecular Biology

Background:

• Nectin-4 is a transmembrane protein expressed in placenta and trachea.
• Nectin-4 expression is observed in various cancer types.
• The role of nectin-4 in prostate cancer is not well understood.

Purpose of the Study:

• To investigate nectin-4 expression in human prostate cancer tissues for the first time.
• To compare nectin-4 expression in prostate cancer, atypical small acinar proliferation (ASAP), and benign prostatic glands.

Main Methods:

• Retrospective analysis of 82 prostate pathology specimens.
• Immunohistochemical analysis of nectin-4 and alpha-methylacyl-CoA racemase (AMACR) expression.
• Histochemical scoring system used to quantify nectin-4 staining intensity and extent.

Main Results:

• Nectin-4 was not detected in any prostate cancer tissues (Gleason scores <7, 7, or ≥8).
• Nectin-4 was expressed in benign prostatic gland tissues.
• Nectin-4 was found in all atypical small acinar proliferation (ASAP) samples (100%).
• AMACR was positive in prostate cancer tissues and negative in ASAP samples.

Conclusions:

• Nectin-4 is not expressed in prostate cancer.
• Nectin-4 expression is present in ASAP and benign prostate tissues.
• Prospective studies with larger sample sizes, including radical prostatectomy specimens, are warranted to elucidate the relationship between nectin-4 and prostate cancer.