Regulatory Proteins of Epithelial-Mesenchymal Transition and Some Components of VEGF Signaling Pathway in Breast Cancer
2016
Immunohistochemical method was used to assay for Snail family regulatory proteins of epithelial-mesenchymal transition, their NF-κB coactivator, and the components of VEGF signaling pathway (VEGF and its receptors VEGFR1 and VEGFR2) in 157 specimens of breast tumors. Most tumors did not express SNAI1, while 65% tumors demonstrated mid- or high-level SNAI2 expression. There were significant correlations between the expression of SNAI1, SNAI2, and their NF-κB co-activator. Correlation was also detected between expression of Snail and VEGFR1 protein families in the tumors. In addition, the study revealed tumoral co-expression of SNAI2 and VEGFR2. The data attest to coordinated activation of regulatory proteins of epithelial-mesenchymal transition and the major components of VEGF signaling pathway in breast tumors.
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