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Learn MoreWhile analyzing mRNA expression profiles of clear cell renal cell carcinoma (ccRCC) tumors, we found that the mRNAs that are bound at their 3' UTRs by muscleblind-like splicing regulator 2 (Mbnl2) and epithelial splicing regulatory protein 2 (ESRP2) are up-regulated in tumor compared to patient-matched normal tissues. Given that MBNL2 increases the stability of its targets and ESRP2 destabilizes its targets, we predicted that, in ccRCC tumors, MBNL2 activity increases, while ESRP2 activity decreases. To investigate the effect of each of these two RNA-binding proteins (RBPs) on the transcriptome of the cell, we used shRNA to knockdown MBNL2 in two different cell line models of ccRCC (786-O and A-498), and also to knockdown ESRP2 in normal primary renal proximal tubule epithelial cells (PRPTEC). RNA-seq revealed that MBNL2 knockdown partially reverses the ccRCC-associated transcriptome in ccRCC cell lines, whereas ESRP2 knockdown shifts the transcriptome of PRPTEC toward that of ccRCC. SOURCE: Hamed,S,NajafabadiComputational and Statistical Genomics Lab McGill University
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