Targeting androgen receptor in estrogen receptor-negative breast cancer.

Targeting androgen receptor in estrogen receptor-negative breast cancer.
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DOI:
10.1016/j.ccr.2011.05.026
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发表时间:
2011-07-12
期刊:
影响因子:
50.3
通讯作者:
Brown M
Brown M
中科院分区:
医学1区
文献类型:
--
作者:
Ni M;Chen Y;Lim E;Wimberly H;Bailey ST;Imai Y;Rimm DL;Liu XS;Brown M

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Endocrine therapies for breast cancer that target the estrogen receptor (ER) are ineffective in the 25-30% of cases that are ER negative (ER−). Androgen receptor (AR) is expressed in 60-70% of breast tumors, independent of ER status. How androgens and AR regulate breast cancer growth remains largely unknown. We find that AR is enriched in ER−breast tumors that over-express HER2. Through analysis of the AR cistrome and androgen-regulated gene expression in ER−/HER2+ breast cancers we find that AR mediates ligand-dependent activation of Wnt and HER2 signaling pathways through direct transcriptional induction of WNT7B and HER3. Specific targeting of AR, Wnt or HER2 signaling impairs androgen-stimulated tumor cell growth suggesting potential therapeutic approaches for ER−/HER2+ breast cancers.
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