BASP1 interacts with oestrogen receptor α and modifies the tamoxifen response.
BASP1 interacts with oestrogen receptor α and modifies the tamoxifen response.
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DOI:
10.1038/cddis.2017.179
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发表时间:
2017-05-11
影响因子:
9
通讯作者:
Roberts SG
中科院分区:
文献类型:
--
作者:
Marsh LA;Carrera S;Shandilya J;Heesom KJ;Davidson AD;Medler KF;Roberts SG
Tamoxifen binds to oestrogen receptor α (ERα) to elicit distinct responses that vary by cell/tissue type and status, but the factors that determine these differential effects are unknown. Here we report that the transcriptional corepressor BASP1 interacts with ERα and in breast cancer cells, this interaction is enhanced by tamoxifen. We find that BASP1 acts as a major selectivity factor in the transcriptional response of breast cancer cells to tamoxifen. In all, 40% of the genes that are regulated by tamoxifen in breast cancer cells are BASP1 dependent, including several genes that are associated with tamoxifen resistance. BASP1 elicits tumour-suppressor activity in breast cancer cells and enhances the antitumourigenic effects of tamoxifen treatment. Moreover, BASP1 is expressed in breast cancer tissue and is associated with increased patient survival. Our data have identified BASP1 as an ERα cofactor that has a central role in the transcriptional and antitumourigenic effects of tamoxifen.
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