Ewaluacja ekspresji fosfatazy tyrozynowej 4A3 (protein tyrosine phosphatase 4A3, PRL-3) – nieznane aspekty heterogenności pierwotnych ognisk raka piersi
Evaluation of protein tyrosine phosphatase 4A3 (PRL-3) expression - the unknown aspects of breast cancer primary foci heterogeneity

Summary/Abstract: Introduction: Despite significant progress in the diagnosis and introduction of modem therapy, the results of treatment of patients with breast cancer are still far from expectations. This indicates the need to find out the causes and consequences of the heterogeneity of breast cancer and the potential clinical implications of such knowledge. Materials and methods: Immunohistochemical assessment of 4A3 tyrosine phosphatase (PRL-3) expression in breast cancer and search for its potential relations to selected prognostic parameters. Results: There was heterogeneity of primary breast cancer foci in terms of PRL-3 expression and relation to the established prognostic parameters. The inverse correlation of the strength of progesterone receptor expression and PRL-3, were revealed. There was no significant correlation in straight of expression between primary foci and synchronous metastasis to the lymph node. Conclusions: The results of the presented research show previously unknown aspects of heterogeneity of primary breast cancer foci and the complex role of the PRL-3 protein in the biology of this cancer. There was shows need for further research of the role of PRL-3 in EMT.

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