Syndecan-1 and syndecan-4 are overexpressed in an estrogen receptor-negative, highly proliferative breast carcinoma subtype

Breast Cancer Research and Treatment
Füsun BabaAndreas Friedl

Abstract

Members of the syndecan and glypican families of cell surface heparan sulfate proteoglycans (HSPGs) are modulators of growth factor signaling and cell adhesion. Both loss and gain in expression of syndecans and glypicans has been associated with malignant progression. The goal of this project was to investigate a possible relationship between expression of cell surface HSPGs (syndecan-1, syndecan-4 and glypican-1) and established prognostic factors or clinical outcome in breast carcinomas. Tissue arrays containing 207 human breast carcinoma samples in duplicate were immuno-labeled with antibodies to syndecan-1, syndecan-4, glypican-1, Ki67, E-cadherin, estrogen receptor (ER) and progesterone receptor (PR). Clinical follow-up information was available for up to 18.6 years (median follow-up 6.2 years). Syndecan-1 and syndecan-4 expression in carcinoma cells ranged from complete loss to high expression, but glypican-1 was detected only in a small subset of breast carcinomas. Expression of all three HSPGs was significantly associated with the Ki67 proliferation index (syndecan-1: p=0.0025; syndecan-4: p<0.0001; glypican-1 p=0.01). Syndecan-1 and syndecan-4 expression correlated with ER negativity, grade, and size of the primary tum...Continue Reading

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Citations

Jun 8, 2007·Breast Cancer Research and Treatment·Maret BauerAndreas Friedl
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