Intrinsic BET inhibitor resistance in SPOP-mutated prostate cancer is mediated by BET protein stabilization and AKT-mTORC1 activation.
Intrinsic BET inhibitor resistance in SPOP-mutated prostate cancer is mediated by BET protein stabilization and AKT-mTORC1 activation.
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SPOP 突变前列腺癌的内在 BET 抑制剂耐药性是由 BET 蛋白稳定和 AKT-mTORC1 激活介导的
DOI:
10.1038/nm.4379
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发表时间:
2017-09
期刊:
影响因子:
82.9
通讯作者:
Huang H
中科院分区:
文献类型:
--
作者:
Zhang P;Wang D;Zhao Y;Ren S;Gao K;Ye Z;Wang S;Pan CW;Zhu Y;Yan Y;Yang Y;Wu D;He Y;Zhang J;Lu D;Liu X;Yu L;Zhao S;Li Y;Lin D;Wang Y;Wang L;Chen Y;Sun Y;Wang C;Huang H
Bromodomain and extraterminal domain (BET) protein inhibitors are emerging as promising anti-cancer therapies. The gene encoding the E3 ubiquitin ligase substrate-binding adaptor speckle-type POZ protein (SPOP) is most frequently mutated in prostate cancer. Here we demonstrate that wild-type SPOP binds to and induces ubiquitination and proteasomal degradation of BET proteins (BRD2, BRD3 and BRD4) by recognizing a common degron motif. In contrast, prostate cancer-associated SPOP mutants impair binding and proteasomal degradation of BET proteins, thus inducing their accumulation in prostate cancer cells and patient specimens. Transcriptome and BRD4 cistrome analyses reveal that SPOP mutation enhances BRD4-dependent expression of GTPase RAC1 and cholesterol biosynthesis genes and AKT-mTORC1 activation. SPOP mutant expression confers BET inhibitor resistance and this effect can be overcome by AKT inhibitors. Thus, SPOP mutations promote AKT-mTORC1 activation and intrinsic BET inhibitor resistance by stabilizing BET proteins, suggesting that SPOP mutation can be an effective biomarker to guide BET inhibitor-oriented therapy of prostate cancer.
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影响因子:
64.8
作者:
通讯作者:
--
影响因子:
8.8
作者:
Patel AJ;Liao CP;Chen Z;Liu C;Wang Y;Le LQ
通讯作者:
Le LQ
影响因子:
64.5
作者:
Cancer Genome Atlas Research Network
通讯作者:
Cancer Genome Atlas Research Network
影响因子:
3.7
作者:
Mittempergher L;de Ronde JJ;Nieuwland M;Kerkhoven RM;Simon I;Rutgers EJ;Wessels LF;Van't Veer LJ
通讯作者:
Van't Veer LJ
影响因子:
4.8
作者:
Blattner, Mirjam;Lee, Daniel J.;Rubin, Mark A.
通讯作者:
Rubin, Mark A.