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Microarray-based Identification of Individual HERV Loci Expression: Application to Biomarker Discovery in Prostate Cancer
Published on: November 2, 2013
[Prostate specific antigen and NF-kB in prostatic disease: relation with malignancy].
J R Cansino1, R Vera, F Rodríguez de Bethencourt
1Hospital Universitario La Paz, Madrid, España. urocansino@yahoo.es
Actas Urologicas Espanolas
|January 25, 2011
Summary
Nuclear factor-kappa B (NF-kB) expression, specifically p50 and p65 subunits, correlates with elevated prostate-specific antigen (PSA) levels in men with prostate conditions. This suggests NF-kB activation may play a role in prostate cancer progression.
Area of Science:
- Molecular Biology
- Oncology
- Immunology
Context:
- Nuclear factor-kappa B (NF-kB) is a transcription factor implicated in cellular resistance to tumor necrosis factor-alpha (TNF-α)-induced apoptosis.
- Prostate-specific antigen (PSA) is a key biomarker for prostate health and disease.
Purpose:
- To investigate the relationship between the expression of NF-kB subunits (p50 and p65) and serum PSA levels.
- To compare NF-kB expression in normal prostate tissue, benign prostatic hyperplasia (BPH), and prostate cancer (PC).
Summary:
- NF-kB p50 and p65 subunits were evaluated in 5 normal, 24 BPH, and 19 PC patient samples using immunohistochemical and Western blot analyses.
- While p65 was absent and p50 showed limited cytoplasmic expression in controls, both subunits were detected in 62.5% of BPH and 63.2% of PC samples.
- Increased expression frequency of both p50 and p65 correlated with higher serum PSA levels across all groups.
Impact:
- Findings suggest that NF-kB activation, indicated by nuclear translocation in prostate cancer, may be linked to disease progression and elevated PSA.
- Understanding the biological mechanisms connecting circulating PSA levels and NF-kB expression is crucial.
- NF-kB inhibition presents a potential therapeutic strategy for counteracting prostate cancer proliferation.
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