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Related Experiment Videos

E-cadherin expression and PSA secretion in human prostate epithelial cells.

D Krill1, A Thomas, S P Wu

  • 1University of Pittsburg School of Medicine, C920 Presbyterian University Hospital, PA 15261, USA. krilld@msx.upmc.edu

Urological Research
|October 5, 2001
PubMed
Summary

E-cadherin, a cell adhesion protein, is less expressed in prostate cancer cells. Blocking E-cadherin increased prostate-specific antigen (PSA) secretion in normal and cancer cells, suggesting a role in tumor development.

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Area of Science:

  • Oncology
  • Cell Biology
  • Biochemistry

Background:

  • Prostate-specific antigen (PSA) is a key biomarker for prostate cancer diagnosis and invasion.
  • E-cadherin, a cell adhesion protein, is implicated as an invasion suppressor and is often downregulated in prostate adenocarcinoma.

Purpose of the Study:

  • To investigate E-cadherin expression in prostate cells.
  • To determine the relationship between E-cadherin expression and PSA secretion in normal prostate epithelial cells and the LNCaP prostate tumor cell line.

Main Methods:

  • Immunohistochemical studies to assess E-cadherin expression.
  • Western blot analysis for protein quantification.
  • Incubation of cells with E-cadherin antibody to measure PSA secretion.

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Main Results:

  • E-cadherin expression was significantly higher in normal prostate epithelial cells compared to tumor-derived prostate cells.
  • Incubation with an E-cadherin antibody led to increased PSA detection in the media of both normal prostate epithelial cells and LNCaP cells.

Conclusions:

  • E-cadherin expression is reduced in prostate tumor cells.
  • E-cadherin antibody-induced increase in PSA secretion suggests a functional link between E-cadherin and PSA levels.
  • Understanding E-cadherin's role in PSA secretion may offer insights into prostate epithelial tumorigenesis and cancer progression.