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Open Access Research

Effects of ectopic HER-2/neu gene expression on the COX-2/PGE2/P450arom signaling pathway in endometrial carcinoma cells: HER-2/neu gene expression in endometrial carcinoma cells

Shu Li, XiaoXin Ma*, Li Ma, Cuicui Wang, YuanQi He and ZhiJuan Yu

Author Affiliations

Department of Gynecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China

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Journal of Experimental & Clinical Cancer Research 2013, 32:11  doi:10.1186/1756-9966-32-11

Published: 2 March 2013

Abstract

Objectives

To investigate the role of HER-2/neu-mediated COX-2/P450arom signal in estrogen-dependent endometrial carcinoma.

Methods

The recombinant eukaryotic expression vector, pcDNA3.1-HER-2/neu, was constructed and transfect to Ishikawa endometrial carcinoma cells. The expression of COX-2 and P450arom in transfected cells were detected by real-time PCR and western blotting. The levels of estrogen in cell supernatants were detected by ELISA.

Results

Over-expression of HER-2/neu in transfected cells was confirmed by real-time PCR and western blotting. The levels of autocrine estrogen in transfected cells was significantly increased which combination with the enhancement of COX-2 and P450arom expression in transfected cells.

Conclusion

HER-2/neu induced the improvement of autocrine estrogen in endometrial carcinoma cell through triggering the COX-2/P450arom signal.

Keywords:
HER-2/neu; COX-2; P450arom; Estradiol; Endometrial carcinoma cell