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The P-body protein 4E-T regulates the balance between cell genesis and establishment of the postnatal neural stem cell pool by repressing mRNA translation [Ribotag]

ABSTRACT: To investigate the translatome of postnatal precursors of the V-SVZ cultured as neurospheres, we employed RiboTag analysis We performed RiboTag analysis on precursors derived from NestinCreERT2;RPL22HA/HA animals using specific anti-Hemagluttinin antibodies versus non-specific IgG controls

ORGANISM(S): Mus musculus

PROVIDER: GSE224853 | GEO | 2024/02/08

REPOSITORIES: GEO

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The P-body protein 4E-T regulates the balance between cell genesis and establishment of the postnatal neural stem cell pool by repressing mRNA translation [Cpeb4_neurosphere]

Project description:To investigate the targets of Cpeb4/Cpeb4-associated transcripts in postnatal V-SVZ precursors cultured as neurospheres We performed RNA immunoprecipitations (RIPseq) on neurospheres using anti-Cpeb4 or control anti-IgG antibodies, isolated and sequenced the resulting RNA

2024-02-08 | GSE224854 | GEO

The P-body protein 4E-T regulates the balance between cell genesis and establishment of the postnatal neural stem cell pool by repressing mRNA translation [4ET_neurosphere]

Project description:To investigate the targets of 4E-T in postnatal V-SVZ precursors cultured as neurospheres We performed RNA immunoprecipitations (RIPseq) on neurosphere lysates with anti-4E-T or control anti-IgG antibodies, isolated and sequenced the resulting RNA

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The translational protein 4E-T regulates the balance between differentiation and establishment of postnatal neural stem cell pools

Project description:Microarrays were performed (N=3) on postnatal precursors grown as neurospheres to determine level of gene expression To determine the transcript targets of the translational regulator 4E-T and whether these targets are repressed, we performed RIPs (GSE224966) for these targets as well as Ribotag (GSE224853) in addition to the following microarray as control to determine gene expression in posntatal precursors and ensure the differences observed in Ribotag were not simply due to differences in gene expression levels

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The P-body protein 4E-T regulates the balance between cell genesis and establishment of the postnatal neural stem cell pool by repressing mRNA translation [4ET_VSVZ]

Project description:To investigate the targets of 4E-T in the postnatal V-SVZ We performed RNA immunoprecipitations (RIPseq) on V-SVZ lysates anti-4E-T or control anti-IgG antibodies, isolated and sequenced the resulting RNA

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An eIF4E1/4E-T complex determines the genesis of neurons from precursors by translationally repressing a proneurogenic transcription program

Project description:Here, we have addressed the mechanisms that determine genesis of the correct numbers of neurons during development, focusing upon the embryonic cortex. We identify in neural precursors a repressive complex involving eIF4E1 and its binding partner 4E-T that coordinately represses translation of proteins that determine neurogenesis. This eIF4E1/4E-T complex is present in granules with the processing body proteins Lsm1 and Rck, and disruption of this complex causes premature and enhanced neurogenesis and neural precursor depletion. Analysis of the 4E-T complex shows that it is highly enriched in mRNAs encoding transcription factors and differentiation-related proteins. These include the proneurogenic bHLH mRNAs, which colocalize with 4E-T in granules, and whose protein products are aberrantly upregulated following knockdown of eIF4E, 4E-T, or processing body proteins. Thus, neural precursors are transcriptionally primed to generate neurons, but an eIF4E/4E-T complex sequesters and represses translation of proneurogenic proteins to determine appropriate neurogenesis. We obtained 3 biological replicates of IgG-bound RNA, 4E-T-bound RNA, and cooresponding total RNA input from mouse E12-13 cortices. RNA samples were analyzed on the Affymetrix Mouse Gene 2.0 ST Arrays.

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The P-body protein 4E-T regulates the balance between cell genesis and establishment of the postnatal neural stem cell pool by repressing mRNA translation

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-02-08 | GSE224857 | GEO

An eIF4E1/4E-T complex determines the genesis of neurons from precursors by translationally repressing a proneurogenic transcription program

2014-09-25 | GSE61729 | GEO

RiboTag analysis of actively translated mRNAs in Sertoli and Leydig cells in vivo

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