The SS18-SSX Fusion Oncoprotein Hijacks BAF Complex Targeting and Function to Drive Synovial Sarcoma.
The SS18-SSX Fusion Oncoprotein Hijacks BAF Complex Targeting and Function to Drive Synovial Sarcoma.
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DOI:
10.1016/j.ccell.2018.05.002
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发表时间:
2018-06-11
期刊:
影响因子:
50.3
通讯作者:
Kadoch C
中科院分区:
文献类型:
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作者:
McBride MJ;Pulice JL;Beird HC;Ingram DR;D'Avino AR;Shern JF;Charville GW;Hornick JL;Nakayama RT;Garcia-Rivera EM;Araujo DM;Wang WL;Tsai JW;Yeagley M;Wagner AJ;Futreal PA;Khan J;Lazar AJ;Kadoch C
Synovial sarcoma (SS) is defined by the hallmark SS18-SSX fusion oncoprotein, which renders BAF complexes aberrant in two manners: gain of SSX to the SS18 subunit and concomitant loss of BAF47 subunit assembly. Here we demonstrate that SS18-SSX globally hijacks BAF complexes on chromatin to activate an SS transcriptional signature that we define using primary tumors and cell lines. Specifically, SS18-SSX retargets BAF complexes from enhancers to broad polycomb domains to oppose PRC2-mediated repression and activate bivalent genes. Upon suppression of SS18-SSX, reassembly of BAF47 restores enhancer activation, but is not required for proliferative arrest. These results establish a global hijacking mechanism for SS18-SSX on chromatin, and define the distinct contributions of two concurrent BAF complex perturbations. Incorporation of the synovial sarcoma SS18-SSX fusion into BAF complexes results in concomitant eviction of BAF47. McBride et al. show that SS18-SSX retargets BAF complexes from enhancers to polycomb domains to oppose PRC2-mediated repression. Reincorporation of BAF47 upon suppression of SS18-SSX restores enhancer activation but is not required for proliferative arrest.
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DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
16.8
作者:
Hu D;Garruss AS;Gao X;Morgan MA;Cook M;Smith ER;Shilatifard A
通讯作者:
Shilatifard A
影响因子:
16
作者:
Hu D;Gao X;Cao K;Morgan MA;Mas G;Smith ER;Volk AG;Bartom ET;Crispino JD;Di Croce L;Shilatifard A
通讯作者:
Shilatifard A
影响因子:
5.8
作者:
Feng, Jianxing;Meyer, Clifford A.;Zhang, Yong
通讯作者:
Zhang, Yong
影响因子:
46.9
作者:
通讯作者:
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