Reverse transcriptase-PCR analysis of apoptosis-regulating gene expression in human benign prostatic hyperplasia

Area of Science:

• Oncology
• Molecular Biology
• Urology

Background:

• Benign prostatic hyperplasia (BPH) is characterized by abnormal prostate cell growth.
• The role of apoptosis-regulating genes in BPH pathogenesis is not fully understood.
• Investigating the balance between proapoptotic and antiapoptotic signals is crucial for understanding BPH.

Purpose of the Study:

• To investigate the expression of apoptosis-regulating genes (bcl-2, bax, c-myc, fas) in BPH tissues.
• To determine if an imbalanced interaction between proapoptotic and antiapoptotic signals contributes to BPH.
• To explore correlations between gene expression, patient age, and serum prostate-specific antigen (PSA) levels.

Main Methods:

• Gene expression analysis using reverse transcriptase-polymerase chain reaction (RT-PCR).
• Study of BPH specimens from 20 patients undergoing prostate surgery.
• Correlation analysis with patient age and serum PSA levels.

Main Results:

• Differential gene expression observed in BPH tissues.
• Weakest signal for antiapoptotic bcl-2 (18/20 samples), highest for c-myc (all samples).
• Positive correlations found between bcl-2, bax, fas, and c-myc expression; bax correlated with age and PSA.

Conclusions:

• High expression of oncogene c-myc indicates activated mitogenic signals in BPH.
• Relatively high expression of proapoptotic genes bax and fas does not counterbalance c-myc.
• Apoptosis dysregulation may play a role in the loss of cell growth control in BPH.