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Wolff, C.* ; Malinowsky, K.* ; Berg, D.* ; Schragner, K.* ; Schuster, T:* ; Walch, A.K. ; Bronger, H.* ; Höfler, H. ; Becker, K.F.*

Signalling networks associated with urokinase-type plasminogen activator (uPA) and its inhibitor PAI-1 in breast cancer tissues: New insights from protein microarray analysis.

J. Pathol. 223, 54-63 (2011)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The urokinase-type plasminogen activator (uPA) and the main uPA inhibitor PAI-1 play important roles in cell migration and invasion in both physiological and pathological contexts. Both factors are clinically applicable predictive markers in node-negative breast cancer patients that are used to stratify patients for adjuvant chemotherapy. In addition to their classical functions in plasmin regulation, both factors are key components in cancer-related cell signalling. Such signalling cascades are well described in cell culture systems, but a better understanding of uPA- and PAI-1-associated signalling networks in clinical tissues is needed. We examined the expression of uPA, PAI-1, and 21 signalling molecules in 201 primary breast cancer tissues using protein microarrays. Expression of uPA was significantly correlated with the expression of ERK and Stat3, while expression of PAI-1 was correlated with the uPA receptor and Akt activation, presumably via integrin and HER-receptor signalling. Analysis of uPA expression did not reveal any significant correlation with staging, grading or age of the patients. The PAI-1 expression was correlated with nodal stage. Network monitoring for uPA and PAI-1 in breast cancer reveals interactions with main signalling cascades and extends the findings from cell culture experiments. Our results reveal possible mechanisms underlying cancer development.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Urokinase-type plasminogen activator (uPA); Plasminogen activator inhibitor 1 (PAI-1); Migration; Invasion; Formalin-fixed; Paraffin-embedded tissue (FFPE); Cell signalling; Protein microarray; Reverse phase protein microarray
Sprache englisch
Veröffentlichungsjahr 2011
Prepublished im Jahr 2010
HGF-Berichtsjahr 2010
ISSN (print) / ISBN 0022-3417
e-ISSN 1096-9896
Zeitschrift Journal of Pathology, The
Quellenangaben Band: 223, Heft: 1, Seiten: 54-63 Artikelnummer: , Supplement: ,
Verlag Wiley
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Pathology (PATH)
Research Unit Analytical Pathology (AAP)
POF Topic(s) 30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
30205 - Bioengineering and Digital Health
Forschungsfeld(er) Enabling and Novel Technologies
PSP-Element(e) G-500300-001
G-500390-001
PubMed ID 21125664
DOI 10.1002/path.2791
Scopus ID 78650012069
Erfassungsdatum 2010-11-29
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