Correlation Between Expression of Twist and Podoplanin in Ductal Breast Carcinoma.

Abstract:

BACKGROUND/AIM:As a result of activation of transcription factors engaged in epithelial-mesenchymal transition (EMT), such as Twist, inhibition of epithelial markers and an increased expression of mesenchymal markers are observed. One of the specific markers of cancer-associated fibroblasts is podoplanin (PDPN) - a mucin-type membrane glycoprotein. The aim of this work was to study the localisation and intensity of expression of Twist and PDPN on the mRNA and protein level in cases of invasive ductal breast carcinoma (IDC), and its association with patients' clinico-pathological data. MATERIALS AND METHODS:The study included archival material in a form of 80 paraffin IDC blocks and 11 IDC fragments frozen in liquid nitrogen. Immunohistochemical expression of Twist and PDPN was evaluated using light microscope and semiquantitative scale for evaluation of nuclear expression or immunoreactive scale (IRS) for evaluation of cytoplasmic expression. Material was isolated from frozen IDC fragments using laser micro-dissection (from cancer and stromal cells, separately) and was used to perform real-time PCR. RESULTS:Twist expression was higher in stromal cells in comparison to cancer cells. Analysis of patients' survival rate showed, that higher expression of Twist in cancer cells was associated with shorter overall survival time and shorter event-free survival time. The expression of PDPN was also higher in stromal cells in comparison with cancer cells. In addition, positive correlation was observed between expression of Twist and PDPN in stromal cells of IDC (r=0.267; p<0.05). CONCLUSION:The relationship between the higher expression of Twist in both cancer and stromal cells and shorter patients' survival indicates Twist as a potential useful prognostic marker in IDC. Positive correlation of Twist and PDPN expression may indicate the role of PDPN in EMT in IDC.

journal_name

Anticancer Res

journal_title

Anticancer research

authors

Grzegrzolka J,Wojtyra P,Biala M,Piotrowska A,Gomulkiewicz A,Rys J,Podhorska-Okolow M,Dziegiel P

doi

10.21873/anticanres.11978

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

5485-5493

issue

10

eissn

0250-7005

issn

1791-7530

pii

37/10/5485

journal_volume

37

pub_type

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