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)
Pagina inizio
  • 378 (literal)
Pagina fine
  • 384 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 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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