E2F3 upregulation promotes tumor malignancy through the transcriptional activation of HIF-2α in clear cell renal cell carcinoma.
E2F3 upregulation promotes tumor malignancy through the transcriptional activation of HIF-2α in clear cell renal cell carcinoma.
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在透明细胞肾细胞癌中 E2F3 上调通过 HIF-2 α 的转录激活促进肿瘤恶性
DOI:
10.18632/oncotarget.10568
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发表时间:
2017-08-15
期刊:
影响因子:
--
通讯作者:
Zhang X
中科院分区:
文献类型:
--
作者:
Gao Y;Li H;Ma X;Fan Y;Ni D;Zhang Y;Huang Q;Liu K;Li X;Wang L;Yao Y;Ai Q;Zhang X
The E2F3 transcriptional regulatory pathway plays a major part in multiple-cancer progression, but the specific contributions of this pathway to tumor formation and the progression of clear cell renal cell carcinoma (ccRCC) are not fully understood. Clinically, we demonstrated that E2F3 was overexpressed in advanced tumor features. Moreover, cytoplasmic restoration predicted the poor overall survival of ccRCC patients. As a remarkable oncogene for ccRCC, high HIF-2α levels closely correlated with E2F3 upregulation. We observed in vitro that E2F3 overexpression and knockdown regulated HIF-2α expression. Furthermore, we found that HIF-2α harbored multiple E2F3 binding sites in the promoters. Mechanistically, E2F3 acted to transactivate HIF-2α transcription, which in turn exerted a serial effect on the pivotal epithelial–mesenchymal transition-related genes. The RNA interference-mediated silencing of HIF-2α attenuated E2F3-enhanced cell migration and invasion in vitro and in vivo. Overall, our results identified HIF-2α as a direct target gene for E2F3 upregulation, which was critical for carcinogenesis and progression of ccRCC. Thus, targeting the E2F3–HIF-2α interaction may be a promising approach to ccRCC treatment.
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影响因子:
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作者:
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通讯作者:
Smith, Hamilton O.
影响因子:
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通讯作者:
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