http://www.cnr.it/ontology/cnr/individuo/prodotto/ID14035
Elevated Expression of the Tyrosine Phosphatase SHP-1 Defines a Subset of High-Grade Breast Tumors (Articolo in rivista)
- Type
- Label
- Elevated Expression of the Tyrosine Phosphatase SHP-1 Defines a Subset of High-Grade Breast Tumors (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1159/000276765 (literal)
- Alternative label
Insabato, L; Amelio, I; Quarto, M; Zannetti, A; Tolino, F; de Mauro, G; Cerchia, L; Riccio, P; Baumhoer, D; Condorelli, G; Terracciano, L; de Franciscis, V (2010)
Elevated Expression of the Tyrosine Phosphatase SHP-1 Defines a Subset of High-Grade Breast Tumors
in Oncology (Basel)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Insabato, L; Amelio, I; Quarto, M; Zannetti, A; Tolino, F; de Mauro, G; Cerchia, L; Riccio, P; Baumhoer, D; Condorelli, G; Terracciano, L; de Franciscis, V (literal)
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- ISI Web of Science (WOS) (literal)
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- Biomorphological and Functional Science, Anatomic Pathology Section, Faculty of Medicine, Università degli Studi di Napoli Federico II, Napoli, Italia
Istituto di Biostrutture e Bioimmagini, CNR - IBB, Napoli, Italy (literal)
- Titolo
- Elevated Expression of the Tyrosine Phosphatase SHP-1 Defines a Subset of High-Grade Breast Tumors (literal)
- Abstract
- OBJECTIVES:
Protein tyrosine phosphatases are key regulators of intracellular signaling that contribute to determining cancer cell growth, which thus makes them attractive targets for therapeutic and diagnostic agents. SHP-1 phosphotyrosine phosphatase is rarely expressed in epithelial tumor cells, but expression has been found in several breast cancer cell lines and tumors. To determine the potential significance of SHP-1 as a prognostic marker in the clinical setting, we examined SHP-1 protein expression in breast tumors.
METHODS:
We analyzed SHP-1 expression by immunohistochemistry in a breast tissue microarray composed of 2,081 cores, either alone or in combination with known prognostic markers.
RESULTS:
Our data showed that SHP-1 expression was confined to a well-defined subset of high-grade tumors characterized by unique biological parameters. SHP-1 expression correlated directly with expression of the tyrosine kinase receptor HER-2 and inversely with expression of the estrogen receptor, while it was weakly associated with Bcl-2 expression.
CONCLUSIONS:
Levels of SHP-1 were correlated with conventional pathologic parameters of tumor aggressiveness and were associated with reduced patient survival, suggesting that elevated expression of SHP-1 is a common molecular abnormality in a defined subset of breast tumors and might be used in routine diagnosis to identify patients with high-risk tumors (literal)
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