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Abstract Title:

Tamoxifen has a proliferative effect in endometrial carcinoma mediated via the GPER/EGFR/ERK/cyclin D1 pathway: A retrospective study and an in vitro study.

Abstract Source:

Mol Cell Endocrinol. 2016 Dec 5 ;437:51-61. Epub 2016 Aug 9. PMID: 27519631

Abstract Author(s):

Lizhi Zhang, Yanmin Li, Lan Lan, Rong Liu, Yanhong Wu, Quanxin Qu, Ke Wen

Article Affiliation:

Lizhi Zhang

Abstract:

Tamoxifen has been widely used to treat breast cancer as an endocrine therapy. However, tamoxifen is known to enhance the risk of developing endometrial cancer. We want to examine the effect of tamoxifen on endometrial cancer. In our retrospective study, we found that high grade, high stage, and lymph node metastasis were more common in tamoxifen users. In vitro 4-hydroxytamoxifen (OHT) induced cell proliferation and cell cycle promotion in type I and type II endometrial cancer cell lines, and this proliferation was blocked by GPER silencing. Treatment with OHT increased EGFR and ERK phosphorylation and the mRNA and protein levels of cyclin D1 and GPER. Taken together, our data demonstrate that endometrial cancer patients with tamoxifen treatment exhibit more aggressive histological subtypes and worse prognosis. OHT is a proliferation-inducing agent for endometrial cancer cells, and the GPER/EFGR/ERK/cyclin D1 pathway is involved in this process.

Study Type : In Vitro Study

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Sayer Ji
Founder of GreenMedInfo.com

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