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CPEB inducible knock-down in a H.D. Myz cell line

ABSTRACT: Messenger RNA stability, localization, and translation are largely determined by sequences in their 3′ untranslated regions (3’UTRs), which recruit regulatory proteins and RNAs. More than half of the mammalian genes generate multiple mRNA isoforms differing in their 3′UTRs and therefore in their regulatory elements. The Cytoplasmic Polyadenylation Element Binding protein 1 (CPEB1) binds to cognate sites in 3’ UTRs and regulates translation. CPEB1 can shuttle to the nucleus and we report its co-localization with splicing factors. CPEB1 knock down leads to changes in alternative splicing, and we show that alternative 3’ splice site linked to alternative polyadenylation of the bub-3 pre-mRNA, important for cell proliferation, is regulated by CPEB1 at least in part by preventing 3’ splice site recognition by U2AF. RNA-Seq experiments reveal that CPEB1 mediates 3’ UTR shortening of hundreds of mRNAs, leading to changes in their translation efficiency.

ORGANISM(S): Homo sapiens

PROVIDER: GSE32440 | GEO | 2013/02/25

SECONDARY ACCESSION(S): PRJNA147713

REPOSITORIES: GEO

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CPEB inducible knock-down in a H.D. Myz cell line

Project description:Messenger RNA stability, localization, and translation are largely determined by sequences in their 3M-bM-^@M-2 untranslated regions (3M-bM-^@M-^YUTRs), which recruit regulatory proteins and RNAs. More than half of the mammalian genes generate multiple mRNA isoforms differing in their 3M-bM-^@M-2UTRs and therefore in their regulatory elements. The Cytoplasmic Polyadenylation Element Binding protein 1 (CPEB1) binds to cognate sites in 3M-bM-^@M-^Y UTRs and regulates translation. CPEB1 can shuttle to the nucleus and we report its co-localization with splicing factors. CPEB1 knock down leads to changes in alternative splicing, and we show that alternative 3M-bM-^@M-^Y splice site linked to alternative polyadenylation of the bub-3 pre-mRNA, important for cell proliferation, is regulated by CPEB1 at least in part by preventing 3M-bM-^@M-^Y splice site recognition by U2AF. RNA-Seq experiments reveal that CPEB1 mediates 3M-bM-^@M-^Y UTR shortening of hundreds of mRNAs, leading to changes in their translation efficiency. Three total RNA from three biological replicates were labeled and hybridized versus its own control in direct and dye-swap hybridizations.

2013-02-25 | E-GEOD-32440 | biostudies-arrayexpress

Mechanisms for U2AF to define 3M-bM-^@M-2 splice sites and regulate alternative splicing in the human genome

Project description:The U2AF heterodimer has been well studied for its role in defining functional 3M-bM-^@M-^Y splice sites in pre-mRNA splicing, but many fundamental questions still remain unaddressed regarding the function of U2AF in mammalian genomes. Through genome-wide analysis of U2AF-RNA interactions, we report that U2AF has the capacity to directly define ~88% of functional 3M-bM-^@M-^Y splice sites in the human genome, but numerous U2AF binding events also occur in intronic locations. Mechanistic dissection reveals that upstream intronic binding events interfere with the immediate downstream 3M-bM-^@M-^Y splice site associated with either the alternative exon to cause exon skipping or with the competing constitutive exon to induce exon inclusion. We further demonstrate partial functional impairment with mutations in U2AF35, but not U2AF65, in regulated splicing. These findings reveal the genomic function and regulatory mechanism of U2AF in both normal and disease states. Examination of U2AF heterodimer regulated splicing in Hela cells with CLIP-seq (U2AF65), paired-end RNA-seq (si-NC and si-U2AF65) and RASL-seq (respective three biological replicates of WT, si-NC, si-U2AF65, si-U2AF35, si-NC + pcDNA3.0, si-U2AF65 + pcDNA3.0, and si-U2AF65 + Flag-U2AF35)

2014-10-08 | E-GEOD-61603 | biostudies-arrayexpress

Mechanisms for U2AF to define 3′ splice sites and regulate alternative splicing in the human genome

Project description:The U2AF heterodimer has been well studied for its role in defining functional 3’ splice sites in pre-mRNA splicing, but many fundamental questions still remain unaddressed regarding the function of U2AF in mammalian genomes. Through genome-wide analysis of U2AF-RNA interactions, we report that U2AF has the capacity to directly define ~88% of functional 3’ splice sites in the human genome, but numerous U2AF binding events also occur in intronic locations. Mechanistic dissection reveals that upstream intronic binding events interfere with the immediate downstream 3’ splice site associated with either the alternative exon to cause exon skipping or with the competing constitutive exon to induce exon inclusion. We further demonstrate partial functional impairment with mutations in U2AF35, but not U2AF65, in regulated splicing. These findings reveal the genomic function and regulatory mechanism of U2AF in both normal and disease states.

2014-10-08 | GSE61603 | GEO

Localization of functionally distinct CDC42 isoforms in neurons requires alternative 3'UTR usage

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2018-12-07 | PXD011518 | Pride

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Coupling between alternative polyadenylation and alternative splicing is limited to terminal introns

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SRSF7 and SRSF3 affectSRSF7 and SRSF3 affect 3’UTR length in opposite directions by controlling proximal poly(A)-site usage and CFIm levels 3’UTR length in opposite directions by controlling proximal poly(A)-site usage and CFIm levels

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2021-09-09 | PXD018090 | Pride

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2016-09-17 | GSE86791 | GEO

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