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HnRNPDL extensively regulates transcription and alternative splicing

ABSTRACT: hnRNPDL extensively regulates transcription and alternative splicing

PROVIDER: PRJNA428381 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6438321_1.fastq.gz	Fastqsanger.gz
	SRR6438321_2.fastq.gz	Fastqsanger.gz
	SRR6438322_1.fastq.gz	Fastqsanger.gz
	SRR6438322_2.fastq.gz	Fastqsanger.gz
	SRR6438323_1.fastq.gz	Fastqsanger.gz

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hnRNPDL extensively regulates transcription and alternative splicing

Project description:RNA binding proteins (RBPs) are key players of genome regulation. Here we report the transcriptome study of HnRNP D-Like protein, which belongs to the hnRNP family. We used RNA-seq to analyze the global transcript level and alternative splicing on hnRNPDL shRNA-treated cells and control. Sh-hnRNPDL extensively increased in the expression of genes involved in female pregnancy, cell apoptosis, cell proliferation and cell migration. HnRNPDL regulated alternative splicing of hundreds of genes enriched in transcription regulation and signalling pathways including NOD-like receptor signaling, Notch signaling, and TNF signaling. This study provides the first transcriptome-wide analysis of hnRNPDL regulation of gene expression, which adds to the understanding of critical hnRNPDL functions.

2020-12-22 | GSE108728 | GEO

TfR1 globally regulates transcription and alternative splicing

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Filamin B extensively regulates the transcription and alternative splicing and is associated with apoptosis in HeLa cells

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Filamin B extensively regulates the transcription and alternative splicing and is associated with apoptosis in HeLa cells

Project description:Post-transcriptional mechanisms is an important means for the body to fight against cancer, and it may also be hijacked by tumor cells to help them adapt to local microenvironment. Filamin B (FLNB), an actin-binding protein and providing crucial scaffolds for cell motility and signaling, was also identified as one of RNA binding proteins (RBPs). Recent works showed that FLNB might play important role not only in skeletal development but also in the regulation of tumorigenesis. However, the effects of dysregulated expression of FLNB at a molecular level are unclear. In this study, we used RNA-seq to analyze the global transcriptional level changes and alternative splicing between the knocked-down FLNB and the control in Hela cells. Reduced levels of FLNB led to a significant decrease in cell apoptosis, compared with control cells. FLNB knockdown extensively regulated the expression of genes in cell apoptosis, tumorigenesis, metastases, transmembrane transport, cartilage and nerve development. Moreover, FLNB regulated alternative splicing of a large number of genes enriched in cell death and apoptotic process. Meanwhile, some genes and alternative splicing related to skeletal development were enriched and regulated by FLNB. Quantitative RT-PCR confirmed the FLNB-regulated transcription and alternative splicing. This study provides the first transcriptome-wide analysis of FLNB. Our findings indicated that FLNB may play an important regulatory role in cancer cell apoptosis via the regulation of alternative splicing and potentially transcription, which greatly expands the current understanding of the mechanisms of FLNB mediated gene regulation.

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An Alternative Splicing Switch Regulates Embryonic Stem Cell Pluripotency and Reprogramming

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The PAF complex regulates alternative splicing.

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The PAF complex regulates alternative splicing.

Project description:The conserved Eukaryotic PAF complex binds to transcribing RNA polymerase II to control deposition of histone marks during transcription. Recently its role in alternative polyadenylation (selection of mRNA 3’end cleavage sites by CPSF) was described. In this work we show that the PAF complex also regulates alternative splicing.

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TCERG1 regulates alternative splicing of Bcl-x gene by modulating the rate of RNAPII transcription

Project description:Complex functional coupling exists between transcriptional elongation and pre-mRNA alternative splicing. Pausing sites and changes in the rate of transcription by RNAPII may therefore have a fundamental impact in the regulation of alternative splicing. Here, we show that the elongation and splicing-related factor TCERG1 regulates alternative splicing of the apoptosis gene Bcl-x in a promoter-dependent manner. TCERG1 promotes the splicing of the short isoform of Bcl-x (Bcl-xs) through the SB1 regulatory element located in the first half of exon 2. Consistent with these results, we show evidence for in vitro and in vivo interaction of TCERG1 with the Bcl-x pre-mRNA. Transcription profile analysis reveals that the RNA sequences required for the effect of TCERG1 on Bcl-x alternative splicing coincide with a putative polymerase pause site. Furthermore, TCERG1 modifies the impact of a slow polymerase on Bcl-x alternative splicing. In support of a role for an elongation mechanism in the transcriptional control of Bcl-x alternative splicing, we found that TCERG1 modifies the amount of pre-mRNAs generated at distal regions of the endogenous Bcl-x. Most importantly, TCERG1 affects the rate of RNAPII transcription of endogenous human Bcl-x. We propose that TCERG1 modulates the elongation rate of RNAPII to relieve pausing, thereby activating the pro-apoptotic Bcl-xS 5’ splice site. ChIP-Seq

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