Aryl hydrocarbon receptor;
Cancer stem cells;
Breast cancer;
STEM-CELLS;
AH RECEPTOR;
CANCER;
MECHANISMS;
EXPANSION;
WNT;
D O I:
10.1016/j.canlet.2011.11.025
中图分类号:
R73 [肿瘤学];
学科分类号:
100214 ;
摘要:
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor. Recent studies have reported the anti-tumor effects of the AhR in breast cancer. In this study, we investigated the anti-tumor effect of AhR activation based on the cancer stem cell hypothesis. We show that AhR activation suppressed mammosphere formation of MCF-7 cells and decreased the proportion of cells with high ALDH-1 (aldehyde dehydrogenase 1) activity. In addition, we also demonstrate that AhR activation regulates self-renewal signaling by down-regulating Wnt/beta-catenin and Notch. (C) 2011 Elsevier Ireland Ltd. All rights reserved.