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Genome-wide mRNA targets of CPEB1 in muscle stem cells

ABSTRACT: Genome-wide mRNA targets of CPEB1 in muscle stem cells

PROVIDER: PRJNA626471 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11570157_1.fastq.gz	Fastqsanger.gz
	SRR11570157_2.fastq.gz	Fastqsanger.gz
	SRR11570158_1.fastq.gz	Fastqsanger.gz
	SRR11570158_2.fastq.gz	Fastqsanger.gz
	SRR11570159_1.fastq.gz	Fastqsanger.gz

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Genome-wide mRNA targets of CPEB1 in muscle stem cells

Project description:We performed CPEB1 RIP-seq on freshly isolated muscle stem cells. We found that CPEB1 associated genes are enriched in translational regulation pathways.

2021-11-02 | GSE148912 | GEO

Genome wide mRNA targets of CPEB4 in muscle stem cells

Project description:Genome wide mRNA targets of CPEB4 in muscle stem cells

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Mouse Muscle Stem Cell Proteome during Activation and CPEB1 Dependent Proteome in Mouse Muscle Stem Cell

Project description:Muscle Stem Cells or satellite cells (SCs) are required for muscle regeneration. In resting muscles, SCs are kept in quiescence. After injury, SCs undergo rapid activation, proliferation and differentiation to repair damaged muscles. The transcriptome alteration during SC activation is well characterized. While transcriptome is not exactly represent proteome because of post-transcriptional regulations such as miRNA induced gene silencing. However, little is known about SC proteome. We obtained quisecent SCs (QSCs) and freshly isolated SCs (fiSCs, early activated SCs) and activated SCs (ASCs) for high resolution mass spectrometry Bruker timsTOF Pro. Thus, we uncovered the QSC proteome. By comparison of QSC proteome to fiuSCs proteome or ASCs proteome, we identified the pathways that are differentially expressed between them. Forthermore, we characterized a translational regulator CPEB1 reprogrammed translation landscape for SC activation.

2021-11-05 | PXD018865 | Pride

CPEB1 or CPEB1 (T171A, S177A) interacting proteome analysis on C2C12 cells

Project description:CPEB1 regulates cellular function by post-transcriptionally controlling its targeted transcripts' translation. After bound to CPEs, CPEB1 recruits cytoplasmic poly (A) polymerase GLD2 to elongate the poly (A) tail for the maintenance of mRNA stability. The stability of mRNA is positively correlated with translational output. It is unexamined whether CPEB1 interacts with translation machinery to regulation translation. Previous reports demonstrate that phosphorylation is required for its regulation on translation. However, it is not well understood whether phosphorylation is essential for CPEB1 interaction with translation machinery or not. Here, we performed mass spectrometry on C2 cells transfected with CPEB1-mVenus or CPEB1 (T171A, S177A)-mVenus after IgG or mVenus antibody immunoprecipitation. After analysis, we identify CPEB1 interacting proteins and the phosphorylation dependent interacting proteins such as ribosomal proteins. Thus, our data suggest that CPEB1 regulate translation by interacting with translation machinery in a phosphorylation dependent manner.

2021-11-04 | PXD020822 | Pride

CPEB1-dependent disruption of the mRNA translation program in oocytes during maternal aging

Project description:The molecular causes of deteriorating oocyte quality during aging are poorly defined. Since oocyte developmental competence relies on post-transcriptional regulations, we tested whether defective mRNA translation contributes to this decline in quality. Disruption in ribosome loading on maternal transcripts is present in old oocytes. Using a candidate approach, we detect altered translation of 3’-UTR-reporters and altered poly(A) length of the endogenous mRNAs. mRNA polyadenylation depends on the cytoplasmic polyadenylation binding protein 1 (CPEB1). Cpeb1 mRNA translation and protein levels are decreased in old oocytes. This decrease causes de-repression of Ccnb1 translation in quiescent oocytes, premature CDK1 activation, and accelerated reentry into meiosis. De-repression of Ccnb1 is corrected by Cpeb1 mRNA injection in old oocytes. Oocyte-specific Cpeb1 haploinsufficiency in young oocytes recapitulates all the translation phenotypes of old oocytes. These findings demonstrate that a dysfunction in the oocyte translation program is associated with the decline in oocyte quality during aging.

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Expression data from Neuro2a cells treated with siRNA targeting to Cpeb1 mRNA.

Project description:Cytoplasmic polyadenylation element binding protein 1 (CPEB1) regulates polyadenylation and subsequent translation of CPE-containing mRNAs, which contributes to various physiological and pathological phenomena. To clarify changes in gene expression profiles caused by dysregulation of CPEB1 expression, we performed microarray analyses and revealed that reduced CPEB1 expression altered the expression levels of numerous genes. These findings indicate that accurate post-transcriptional regulation of CPEB1 expression contributes to the maintenance of global gene expression partially through modulating lncRNA expression.

2021-03-31 | GSE147604 | GEO

Genome wide mRNA targets of CPEB4 in muscle stem cells

Project description:We performed CPEB4 RIP-seq on freshly isolated muscle stem cells. We found that CPEB4 associated genes are enriched in metabolic relevant pathways such as some mitochondrial protein coding genes

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Spindle-localized mRNA translation mediated by CPEB1 and CPEB4 controls mitotic progression

Project description:Sequencial functions of CPEB1 and CPEB4 in the localization of repressed mRNAs to the mitotic spindle and their subsequent phase-specific activation to promote cell phase transitions and correct chromosome segregation

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Spindle-localized mRNA translation mediated by CPEB1 and CPEB4 controls mitotic progression

Project description:Here we show sequential functions of CPEB1 and CPEB4 in the localization of repressed mRNAs to the mitotic spindle and their subsequent phase -specific activation to promote cell phase transitions and correct chromosome segregation.

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