Expression of growth hormone receptor, plakoglobin and NEDD9 protein in association with tumour progression and metastasis in human breast cancer.

Abstract

Breast cancer is the most frequently diagnosed cancer and the leading cause of cancer-related deaths among female population worldwide. Metastases are the common cause of morbidity and mortality in breast cancer and can remain latent for several years after surgical removal of the primary tumour. Thus, the identification and functional characterisation of molecular factors that promote oncogenic signalling in mammary tumour development and progression could provide new entry points for designing targeted therapeutic strategies for metastatic breast cancer. In the present study, we investigated the expression of proteins involved in cell signalling (growth hormone receptor (GHR) and NEDD9) and cell-cell adhesion (plakoglobin) in epithelial and stromal compartments of primary ductal invasive breast carcinomas and their axillary lymph node metastases versus non-metastatic tumours. Obtained data revealed remarkable increase in the expression levels of GHR and NEDD9 proteins in both epithelial and stromal components of axillary lymph node metastases in comparison with those of non-metastatic tumours, suggesting that the expression of these two proteins may provide biomarkers for tumour aggressiveness.

• Authors: Emil Štajduhar, Mirela Sedić, Tanja Leniček, Petra Radulović, Aleksandar Kerenji, Božo Krušlin, Krešimir Pavelić, Sandra Kraljević Pavelić
• Journal: Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine (Tumour Biol) Vol. 35 Issue 7 Pg. 6425-34 (Jul 2014) ISSN: 1423-0380 [Electronic] Netherlands
• PMID: 24676793 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Adaptor Proteins, Signal Transducing
• NEDD9 protein, human
• Phosphoproteins
• Receptors, Somatotropin
• gamma Catenin

Topics

• Adaptor Proteins, Signal Transducing (genetics)
• Breast Neoplasms (genetics, pathology)
• Female
• Gene Expression Regulation, Neoplastic
• Genetic Association Studies
• Humans
• Lymph Nodes (pathology)
• Lymphatic Metastasis (genetics)
• Phosphoproteins (genetics)
• Receptors, Somatotropin (genetics)
• Signal Transduction
• gamma Catenin (genetics)