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• W2912497870 endingPage "4168" @default.
• W2912497870 startingPage "4154" @default.
• W2912497870 abstract "Alternative polyadenylation (APA) has emerged as a prevalent feature associated with cancer development and progression. The advantage of APA to tumor progression is to induce oncogenes through 3'-UTR shortening, and to inactivate tumor suppressor genes via the re-routing of microRNA competition. We previously identified the Mammalian Cleavage Factor I-25 (CFIm25) (encoded by Nudt21 gene) as a master APA regulator whose expression levels directly impact the tumorigenicity of glioblastoma (GBM) in vitro and in vivo. Despite its importance, the role of Nudt21 in GBM development is not known and the genes subject to Nudt21 APA regulation that contribute to GBM progression have not been identified. Here, we find that Nudt21 is reduced in low grade glioma (LGG) and all four subtypes of high grade glioma (GBM). Reduced expression of Nudt21 associates with worse survival in TCGA LGG cohorts and two TCGA GBM cohorts. Moreover, although CFIm25 was initially identified as biochemically associated with both CFIm59 and CFIm68, we observed three CFIm distinct subcomplexes exist and CFIm59 protein level is dependent on Nudt21 expression in GBM cells, but CFIm68 is not, and that only CFIm59 predicts prognosis of GBM patients similar to Nudt21. Through the use of Poly(A)-Click-Seq to characterize APA, we define the mRNAs subject to 3'-UTR shortening upon Nudt21 depletion in GBM cells and observed enrichment in genes important in the Ras signaling pathway, including Pak1. Remarkably, we find that Pak1 expression is regulated by Nudt21 through its 3'-UTR APA, and the combination of Pak1 and Nudt21 expression generates an even stronger prognostic indicator of GBM survival versus either value used alone. Collectively, our data uncover Nudt21 and its downstream target Pak1 as a potential combination biomarker for predicting prognosis of GBM patients." @default.
• W2912497870 created "2019-02-21" @default.
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• W2912497870 date "2019-01-31" @default.
• W2912497870 modified "2023-10-15" @default.
• W2912497870 title "Nudt21 regulates the alternative polyadenylation of Pak1 and is predictive in the prognosis of glioblastoma patients" @default.
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• W2912497870 doi "https://doi.org/10.1038/s41388-019-0714-9" @default.
• W2912497870 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6533131" @default.
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• W2912497870 hasPublicationYear "2019" @default.
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