Tyrosine phosphorylation regulates ERβ ubiquitination, protein turnover, and inhibition of breast cancer.
Tyrosine phosphorylation regulates ERβ ubiquitination, protein turnover, and inhibition of breast cancer.
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酪氨酸磷酸化调节 ER β 泛素化、蛋白质周转和乳腺癌抑制
DOI:
10.18632/oncotarget.10018
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发表时间:
2016-07-05
期刊:
影响因子:
--
通讯作者:
Li R
中科院分区:
文献类型:
--
作者:
Yuan B;Cheng L;Gupta K;Chiang HC;Gupta HB;Sareddy GR;Wang D;Lathrop K;Elledge R;Wang P;McHardy S;Vadlamudi R;Curiel TJ;Hu Y;Ye Q;Li R
Unlike estrogen receptor α (ERα) that predominantly promotes hormone-dependent breast tumor growth, ERβ exhibits antitumor effects in a variety of cancer types. We recently identified a phosphotyrosine residue in ERβ, but not ERα, that dictates ERβ transcriptional activity and antitumor function. We show here that this ER isotype-specific phosphotyrosine switch is important for regulating ERβ activity in cell proliferation, migration, and invasion. At the mechanistic level, phosphorylated ERβ, which recruits transcriptional coactivator p300, is in turn targeted by p300 for ubiquitination and proteasome-dependent protein turnover. Furthermore, ERβ-specific agonists such as S-equol enhance ERβ phosphorylation, suggesting a crosstalk between ligand- and posttranslational modification-dependent ERβ activation. Inhibition of xenograft tumor growth by S-equol is associated with reduced tumor Ki-67 expression and elevated ERβ tyrosine phosphorylation. Taken together, our data support the notion that phosphotyrosine-dependent ERβ signaling is an attractive target for anticancer treatment.
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DOI:
10.1038/modpathol.2009.158
发表时间:
2010-02
期刊:
Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc
影响因子:
--
作者:
通讯作者:
--
影响因子:
4.8
作者:
Hall, JM;McDonnell, DP
通讯作者:
McDonnell, DP
影响因子:
4.8
作者:
Cowley, SM;Hoare, S;Parker, MG
通讯作者:
Parker, MG
影响因子:
16
作者:
Li, Chao;Liang, Yao-Yun;Feng, Xin-Hua;Tsai, Sophia Y.;Tsai, Ming-Jer;O'Malley, Bert W.
通讯作者:
O'Malley, Bert W.
影响因子:
--
作者:
Hawse, John R.;Subramaniam, Malayannan;Spelsberg, Thomas C.
通讯作者:
Spelsberg, Thomas C.