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Overexpression of the urokinase receptor splice variant uPAR-del4/5 in breast cancer cells affects cell adhesion and invasion in a dose-dependent manner and modulates transcription of tumor-associated genes
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Bettina Grismayer
Published/Copyright:
November 13, 2012
Abstract
mRNA levels of the urokinase receptor splice variant uPAR-del4/5 are associated with prognosis in breast cancer. Its overexpression in cancer cells affects tumor biologically relevant processes. In the present study, individual breast cancer cell clones displaying low vs. high uPAR-del4/5 expression were analyzed demonstrating that uPAR-del4/5 leads to reduced cell adhesion and invasion in a dose-dependent manner. Additionally, matrix metalloproteinase-9 (MMP-9) was found to be strongly upregulated in uPAR-del4/5 overexpressing compared to vector control cells. uPAR-del4/5 may thus play an important role in the regulation of the extracellular proteolytic network and, by this, influence the metastatic potential of breast cancer cells.
Keywords: adhesion; breast cancer; differential gene expression; invasion; MMP-9; uPAR splice variant
Received: 2012-5-16
Accepted: 2012-7-2
Published Online: 2012-11-13
Published in Print: 2012-12-01
©2012 by Walter de Gruyter Berlin Boston
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Keywords for this article
adhesion;
breast cancer;
differential gene expression;
invasion;
MMP-9;
uPAR splice variant
Articles in the same Issue
- Masthead
- Masthead
- Guest Editorial
- Highlight: 29th Winter School on Proteinases and Their Inhibitors
- Highlight: 29th Winter School on Proteinases and their Inhibitors
- Genetic polymorphisms in the human tissue kallikrein (KLK) locus and their implication in various malignant and non-malignant diseases
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- Three-dimensional cultures modeling premalignant progression of human breast epithelial cells: role of cysteine cathepsins
- Cysteine cathepsins are not critical for TRAIL- and CD95-induced apoptosis in several human cancer cell lines
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