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A network of DZF proteins controls alternative splicing regulation and fidelity [RNA-seq]

ABSTRACT: A network of DZF proteins controls alternative splicing regulation and fidelity [RNA-seq]

PROVIDER: PRJNA848991 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR19646432_1.fastq.gz	Fastqsanger.gz
	SRR19646432_2.fastq.gz	Fastqsanger.gz
	SRR19646433_1.fastq.gz	Fastqsanger.gz
	SRR19646433_2.fastq.gz	Fastqsanger.gz
	SRR19646434_1.fastq.gz	Fastqsanger.gz

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A network of DZF proteins controls alternative splicing regulation and fidelity [RNA-seq]

Project description:Proteins containing DZF (domain associated with zinc fingers) modules play important roles throughout gene expression, from transcription to translation. Derived from nucleotidyltransferases but lacking catalytic residues, DZF domains serve as heterodimerization surfaces between DZF protein pairs. Three DZF proteins are widely expressed in mammalian tissues, ILF2, ILF3, and ZFR, which form mutually exclusive ILF2-ILF3 and ILF2-ZFR heterodimers. Using eCLIP-Seq, we find that ZFR binds across broad intronic regions to regulate the alternative splicing of cassette and mutually exclusive exons. ZFR preferentially binds dsRNA in vitro and is enriched on introns containing conserved dsRNA elements in cells. Many splicing events are similarly altered upon depletion of any of the three DZF proteins; however, we also identify independent and opposing roles for ZFR and ILF3 in alternative splicing regulation. Along with widespread involvement in cassette exon splicing, the DZF proteins control the fidelity and regulation of over a dozen highly validated mutually exclusive splicing events. Our findings indicate that the DZF protein complexes form a complex regulatory network that leverages dsRNA binding by ILF3 and ZFR to modulate splicing regulation and fidelity.

2023-05-09 | GSE206058 | GEO

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A network of DZF proteins controls alternative splicing regulation and fidelity.

Project description:A network of DZF proteins controls alternative splicing regulation and fidelity.

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A network of DZF proteins controls alternative splicing regulation and fidelity [eCLIP-seq]

Project description:A network of DZF proteins controls alternative splicing regulation and fidelity [eCLIP-seq]

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Argonaute proteins couple chromatin silencing to alternative splicing

Project description:This SuperSeries is composed of the following subset Series: GSE39746: Argonaute proteins couple chromatin silencing to alternative splicing (exon array) GSE39748: Argonaute proteins couple chromatin silencing to alternative splicing (RNA IP-Seq) Refer to individual Series

2012-08-22 | E-GEOD-39749 | biostudies-arrayexpress

Alternative splicing regulation by homologous Muscleblind proteins

Project description:We provide data showing alternative splicing regulation by Muscleblind proteins in MEFs. MEFs lacking functional Muscleblind (DKO MEFs) were stably reconstituted with Muscleblind proteins from Homo sapiens, Ciona intestinalis, Drosophila melanogaster, Caenorhabditis elegans or Trichoplax adhaerens and splicing regulation was explored using RNA-seq analysis followed by MISO (Mixture of Isoforms). Alternative splicing was accessed using RNA-sequencing data from five DKO MEF lines reconstituted with different GFP-tagged Muscleblind homologs or GFP alone and compared to RNA-seq data from three WT MEF lines and three control DKO MEFs (no Muscleblind reconstitution). A total of 12 samples were used for high-throughput sequencing.

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Project description:Differentiating erythroid cells execute a unique gene expression program that insures synthesis of the appropriate proteome at each stage of maturation. Standard expression microarrays provide important insight into erythroid gene expression, but cannot detect qualitative changes in transcript structure, mediated by RNA processing, that alter structure and function of encoded proteins. We analyzed stage-specific changes in the late erythroid transcriptome via use of high resolution microarrays that detect altered expression of individual exons. Ten differentiation-associated changes in erythroblast splicing patterns were identified, including the previously known activation of protein 4.1R exon 16 splicing. Six new alternative splicing switches involving enhanced inclusion of internal cassette exons were discovered, as well as three changes in use of alternative first exons. All of these erythroid stage-specific splicing events represent activated inclusion of authentic annotated exons, suggesting they represent an active regulatory process rather than a general loss of splicing fidelity. The observation that three of the regulated transcripts encode RNA binding proteins (SNRP70, HNRPLL, MBNL2) may indicate significant changes in the RNA processing machinery of late erythroblasts. Together these results support the existence of a regulated alternative pre-mRNA splicing program that is critical for late erythroid differentiation. Keywords: Time course; Splicing-sensitive microarray For Exon array hybridizations: 3 biological replicates of day 7, 2 biological replicates of day 10, 3 biological replicates of day 14; For HJAY array hybridizations: 5 biological replicates each were analyzed from day 7 and day 14. One day 14 replicate was deemed an outlier and removed from subsequent analyses.

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