Fas and Fas ligand expression is elevated in prostatic intraepithelial neoplasia and prostatic adenocarcinoma

Jiazhong Jiang, Thomas M. Ulbright, Shaobo Zhang, George J. Eckert, Chinghai Kao, Thomas A. Gardner, Michael O. Koch, John N. Eble, Liang Cheng

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

BACKGROUND. Fas is a Type I membrane receptor of the tumor necrosis factor/nerve growth factor family. On binding to Fas ligand, a Type II transmembrane protein, the Fas/Fas ligand complex, induces apoptosis in target cells. Dysregulation of Fas and Fas ligand expression has been found in some malignant neoplasms. METHODS. Using immunohistochemical analysis, the authors studied the expression of Fas and Fas ligand in prostatic adenocarcinoma, high-grade prostatic intraepithelial neoplasia (PIN), and adjacent benign prostate tissue from 95 radical prostatectomy specimens. RESULTS. The percentage of cells that stained positively with Fas in benign prostate tissue (mean, 2%) was statistically significantly lower compared with that in prostatic intraepithelial neoplasia (mean, 13%; P = 0.0014) and prostatic adenocarcinoma (mean, 31%; P = 0.0001). The staining intensity of Fas was significantly less in benign prostate tissue compared with the staining intensity in PIN and prostatic adenocarcinoma. The percentage of cells that stained positively with Fas ligand in benign prostate tissue (mean, 13%) was statistically significantly lower compared with that in PIN (mean, 47%; P = 0.0001) and in prostatic adenocarcinoma (mean, 53%; P = 0.0001). The staining intensity of Fas ligand was significantly less in benign prostate tissue compared with that in PIN and prostatic adenocarcinoma. CONCLUSIONS. Data from the current study indicate that Fas/Fas ligand is elevated in prostatic malignancy, suggesting that Fas-mediated apoptosis may be a potential target for therapeutic intervention.

Original languageEnglish (US)
Pages (from-to)296-300
Number of pages5
JournalCancer
Volume95
Issue number2
DOIs
StatePublished - Jul 15 2002

    Fingerprint

Keywords

  • Adenocarcinoma
  • Biomarkers
  • Fas
  • Fas ligand
  • Neoplasms
  • Prostate
  • Prostatic intraepithelial neoplasia

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this