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KMID : 1137020140250010036
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Journal of Gynecologic Oncology
2014 Volume.25 No. 1 p.36 ~ p.42
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Correlation between the overexpression of epidermal growth factor receptor and mesenchymal makers in endometrial carcinoma
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Yang Wei-Ning
Ai Zhi-Hong
Wang Juan
Xu Yan-Li
Teng Yin-Cheng
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Abstract
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Objective: The objective of this study was to evaluate the effect of overexpression of epidermal growth factor receptor (EGFR) on the expression of epithelial cell markers (E-cadherin and α-catenin) and mesenchymal cell markers (N-cadherin and vimentin) in endometrial carcinoma.
Methods: The expression of all 4 markers was evaluated in EGFR overexpressing Ishikawa cells, control Ishikawa cells, and KLE cells using reverse transcription polymerase chain reaction (RT-PCR) and Western blotting. The expression of these 4 markers was also determined in cancerous tissues of patients with endometrial carcinoma using immunohistochemical staining.
Results: Ishikawa cells transfected with EGFR showed decreased expression of E-cadherin and α-catenin and increased expression of N-cadherin and vimentin compared with control Ishikawa cells (p<0.01 for all). The expression of N-cadherin and vimentin was higher and the expression of E-cadherin and α-catenin was lower in stage II-III than stage I and in grade II-III than grade I endometrial carcinoma tissue (p<0.01 for all).
Conclusion: Decreased expression of epithelial markers (E-cadherin and α-catenin) and increased expression of mesenchymal markers (N-cadherin and vimentin) were observed in human endometrial carcinoma tissue. These findings correlate with high EGFR expression in cultured endometrial carcinoma cells.
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KEYWORD
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Endometrial carcinoma cells, Epidermal growth factor receptor, Epithelial-mesenchymal transition
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