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Dang, Hien; Takai, Atsushi; Forgues, Marshonna; Pomyen, Yotsowat; Mou, Haiwei; Xue, Wen; Ray, Debashish; Ha, Kevin C.H.; Morris, Quaid D.; Hughes, Timothy R.; Wang, Xin Wei
Cancer cell, 07/2017, Volume: 32, Issue: 1Journal Article
Global transcriptomic imbalance is a ubiquitous feature associated with cancer, including hepatocellular carcinoma (HCC). Analyses of 1,225 clinical HCC samples revealed that a large numbers of RNA binding proteins (RBPs) are dysregulated and that RBP dysregulation is associated with poor prognosis. We further identified that oncogenic activation of a top candidate RBP, negative elongation factor E (NELFE), via somatic copy-number alterations enhanced MYC signaling and promoted HCC progression. Interestingly, NELFE induces a unique tumor transcriptome by selectively regulating MYC-associated genes. Thus, our results revealed NELFE as an oncogenic protein that may contribute to transcriptome imbalance in HCC through the regulation of MYC signaling. Display omitted •mRNA binding proteins (RBPs) are globally dysregulated in HCC•Tumor-associated RBPs are predictive of HCC patient survival•NELFE is oncogenic and enhances MYC signaling•NELFE regulates MYC signaling by binding directly to MYC or its targets Dang et al. show that a large numbers of RNA binding proteins (RBPs) are dysregulated in hepatocellular carcinoma (HCC) and that NELFE, an RBP, enhances MYC-induced HCC development by regulating the binding of MYC to target promoters and the mRNA stability of several MYC-regulated genes.
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