Comprehensive Biochemical Insights into Prostate-Specific Antigen: From Biomarker to Functional Mediator in Prostate...

Area of Science:

• Biochemistry
• Oncology
• Urology

Background:

• Prostate-Specific Antigen (PSA) is a widely used biomarker for prostate cancer (PCa) detection.
• Elevated PSA levels can result from both cancerous and non-cancerous conditions, complicating diagnosis.
• Current PSA assays alone are insufficient for accurate PCa diagnosis, leading to overdiagnosis and overtreatment.

Purpose of the Study:

• To provide a comprehensive review of PSA and its isoforms in normal, benign, and malignant conditions.
• To elucidate the dual role of PSA as both a diagnostic biomarker and a functional mediator in PCa pathophysiology.
• To highlight the potential for improved PSA assays to enhance PCa detection and management.

Main Methods:

• A comprehensive review of existing research on PSA and its isoforms was conducted.
• Analysis focused on the biochemical properties and pathophysiological roles of PSA in prostate health and disease.
• The study synthesized findings related to PSA's function in cancer progression, metastasis, and immune response.

Main Results:

• PSA and its isoforms exhibit distinct levels and patterns in various prostate conditions.
• PSA actively contributes to PCa pathophysiology by promoting Epithelial-Mesenchymal Transition (EMT), tumor progression, invasion, and metastasis.
• Elevated PSA in PCa is linked to immunosuppression, anti-apoptotic effects, and inhibited angiogenesis.

Conclusions:

• A deeper biochemical understanding of PSA and its isoforms is crucial for refining diagnostic accuracy in PCa.
• Leveraging PSA's role as a biomarker can help minimize unnecessary biopsies and facilitate early PCa detection.
• Recognizing PSA's functional roles offers new avenues for studying PCa pathophysiology and developing targeted therapies.