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Article Open Access

Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer

  • Authors:
    • Helena Skálová
    • Nikola Hájková
    • Barbora Majerová
    • Michaela Bártů
    • Ctibor Povýšil
    • Ivana Tichá
  • View Affiliations / Copyright

    Affiliations: Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital in Prague, 12800 Prague, Czech Republic, First Faculty of Medicine, Charles University, 12108 Prague, Czech Republic
    Copyright: © Skálová et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3014-3024
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    Published online on: August 20, 2019
       https://doi.org/10.3892/etm.2019.7930
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Abstract

The importance of the expression profile of claudins in the molecular classification of breast cancer (BC) is currently under investigation. Claudins, together with cadherins, serve an important role in the epithelial‑mesenchymal transition and influence the chemosensitivity of cancer cells. Adjuvant chemotherapy is administered following surgical resection in selected cases of BC. Previous neoadjuvant chemotherapy may change the molecular profile of a tumour and subsequently also its chemosensitivity. In the current study, the expression of claudin‑1, ‑3 and ‑4, E‑ and N‑cadherin and the standard BC biomarkers [oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) and marker of proliferation Ki‑67 (Ki‑67)] in formalin‑fixed, paraffin‑embedded sections from 62 patients with invasive BC was analysed using immunohistochemistry prior to and following neoadjuvant chemotherapy. The results revealed increased expression of claudin‑1 (P=0.03) and decreased expression of claudin‑3 (P=0.005), PR (P<0.001) and Ki‑67 (P=0.01) following the neoadjuvant therapy. No significant changes in the expression of ER, claudin‑4 or E‑ and N‑cadherin were observed following therapy. Furthermore, an association between the expression of claudin‑1 and the standard BC markers (P<0.05) was identified. A high expression of claudin‑1 was more frequently observed in the triple‑negative BC cohort than in the cohort with positive ER, PR and/or HER2 before (P=0.04) and after chemotherapy (P=0.02). The expression of N‑cadherin was associated with the expression of ER, PR, HER2 and tumour grade (P<0.05). A positive association between the expression of claudin‑3 and E‑cadherin (P=0.005) was observed. No association was found between the expression of E‑ and N‑cadherin. In conclusion, significant changes in the expression of claudin‑1 and ‑3 but not in the expression of claudin‑4, E‑ and N‑cadherin were observed in samples taken from patients with BC following chemotherapy. These findings indicate that claudins‑1 and ‑3 serve a role in the response of BC to chemotherapy.
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Copy and paste a formatted citation
Spandidos Publications style
Skálová H, Hájková N, Majerová B, Bártů M, Povýšil C and Tichá I: Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer. Exp Ther Med 18: 3014-3024, 2019.
APA
Skálová, H., Hájková, N., Majerová, B., Bártů, M., Povýšil, C., & Tichá, I. (2019). Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer. Experimental and Therapeutic Medicine, 18, 3014-3024. https://doi.org/10.3892/etm.2019.7930
MLA
Skálová, H., Hájková, N., Majerová, B., Bártů, M., Povýšil, C., Tichá, I."Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer". Experimental and Therapeutic Medicine 18.4 (2019): 3014-3024.
Chicago
Skálová, H., Hájková, N., Majerová, B., Bártů, M., Povýšil, C., Tichá, I."Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer". Experimental and Therapeutic Medicine 18, no. 4 (2019): 3014-3024. https://doi.org/10.3892/etm.2019.7930
Copy and paste a formatted citation
x
Spandidos Publications style
Skálová H, Hájková N, Majerová B, Bártů M, Povýšil C and Tichá I: Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer. Exp Ther Med 18: 3014-3024, 2019.
APA
Skálová, H., Hájková, N., Majerová, B., Bártů, M., Povýšil, C., & Tichá, I. (2019). Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer. Experimental and Therapeutic Medicine, 18, 3014-3024. https://doi.org/10.3892/etm.2019.7930
MLA
Skálová, H., Hájková, N., Majerová, B., Bártů, M., Povýšil, C., Tichá, I."Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer". Experimental and Therapeutic Medicine 18.4 (2019): 3014-3024.
Chicago
Skálová, H., Hájková, N., Majerová, B., Bártů, M., Povýšil, C., Tichá, I."Impact of chemotherapy on the expression of claudins and cadherins in invasive breast cancer". Experimental and Therapeutic Medicine 18, no. 4 (2019): 3014-3024. https://doi.org/10.3892/etm.2019.7930
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