Title : Luminal breast cancer cell lines overexpressing ZNF703 are resistant to tamoxifen through activation of Akt/mTOR signaling.

Pub. Date : 2013

PMID : 23991038






9 Functional Relationships(s)
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1 Luminal breast cancer cell lines overexpressing ZNF703 are resistant to tamoxifen through activation of Akt/mTOR signaling. Tamoxifen zinc finger protein 703 Homo sapiens
2 Therefore, the goal of our study was to explore the role of ZNF703 in tamoxifen resistance. Tamoxifen zinc finger protein 703 Homo sapiens
3 ZNF703 overexpression in MCF-7 breast cancer cells activated the Akt/mTOR signaling pathway, downregulated ERalpha, and reduced the antitumor effect of tamoxifen. Tamoxifen zinc finger protein 703 Homo sapiens
4 Low-dose tamoxifen did not suppress, but rather, stimulated the growth of cells overexpressing ZNF703. Tamoxifen zinc finger protein 703 Homo sapiens
5 ZNF703 knockdown in MDA-MB-134 and HCC1500 luminal B-type breast cancer cell lines by siRNA significantly decreased survival rates when cells were treated with tamoxifen. Tamoxifen zinc finger protein 703 Homo sapiens
6 Furthermore, targeting ZNF703 with a mTOR inhibitor increased the inhibitory effects of tamoxifen in ZNF703-overexpressing cells. Tamoxifen zinc finger protein 703 Homo sapiens
7 Furthermore, targeting ZNF703 with a mTOR inhibitor increased the inhibitory effects of tamoxifen in ZNF703-overexpressing cells. Tamoxifen zinc finger protein 703 Homo sapiens
8 CONCLUSION/SIGNIFICANCE: Our study suggests that ZNF703 expression levels may predict tamoxifen sensitivity. Tamoxifen zinc finger protein 703 Homo sapiens
9 Tamoxifen should be administered with caution to those patients bearing tumors with ZNF703 overexpression. Tamoxifen zinc finger protein 703 Homo sapiens