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Mus musculus

ABSTRACT: Activity-Dependent Regulation of Alternative Cleavage and Polyadenylation (APA) during hippocampal Long-Term Potentiation (LTP) [3'READS]

PROVIDER: PRJNA330722 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3933570.fastq.gz	Fastqsanger.gz
	SRR3933571.fastq.gz	Fastqsanger.gz
	SRR3933572.fastq.gz	Fastqsanger.gz
	SRR3933573.fastq.gz	Fastqsanger.gz
	SRR3933574.fastq.gz	Fastqsanger.gz

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Similar Datasets

Activity-Dependent Regulation of Alternative Cleavage and Polyadenylation (APA) During Hippocampal Long-Term Potentiation (LTP)

Project description:Activity-Dependent Regulation of Alternative Cleavage and Polyadenylation (APA) During Hippocampal Long-Term Potentiation (LTP)

| PRJNA330721 | ENA

Mus musculus

Project description:Activity-Dependent Regulation of Alternative Cleavage and Polyadenylation (APA) During Hippocampal Long-Term Potentiation (LTP) [RNA-Seq]

| PRJNA329505 | ENA

Activity-Dependent Regulation of Alternative Cleavage and Polyadenylation (APA) During Hippocampal Long-Term Potentiation (LTP) [RNA-Seq]

Project description:This study was aimed at elucidating the mechanisms underlying activity-dependent gene regulation during long-term potentiation (LTP) of mouse hippocampal CA3-CA1 synapses. Transcriptome analysis allowed to identify changes in gene expression and alternative splicing induced 1 hour and 3 hours after LTP induction.

2018-02-22 | GSE84503 | GEO

Activity-Dependent Regulation of Alternative Cleavage and Polyadenylation (APA) during hippocampal Long-Term Potentiation (LTP) [3'READS]

Project description:This study was aimed at elucidating the mechanisms underlying activity-dependent gene regulation during LTP of mouse hippocampal CA3-CA1 synapses. Deep sequencing of the 3’ end of transcripts allowed to identify changes in APA induced 1 hour and 3 hours after LTP induction. We detected APA changes that only affected the 3'UTR (3'UTR-APA events) and APA changes that also affected the coding sequence (CDS-APA events).

2018-02-22 | GSE84643 | GEO

Phosphorylation of CPSF6 RS-like domain

Project description:Cleavage factor I mammalian (CFIm) complex, composed of cleavage and polyadenylation specificity factor CPSF6, regulates alternative polyadenylation (APA). CPSF6 has a RS-like domain which plays role in protein -protein interactions. This interaction might have role in alternative polyadenylation site selection. The phosphorylation of RS- like domain might play role in protein -protein interaction and thus might have a role in alternative polyadenylation site selection. So we did mass specteroanalysis to analyse phosphorylation sites of RS-like domain of CPSF6.

2019-04-01 | PXD012713 | Pride

Distinct contributions of ventral CA1/amygdala co-activation to the induction and maintenance of synaptic plasticity

Project description:The amygdala is known to modulate hippocampal synaptic plasticity. One role could be an immediate effect of basolateral amygdala (BLA) in priming synaptic plasticity in the hippocampus. Another role could be through associative synaptic co-operation and competition that triggers events involved in the maintenance of synaptic potentiation. We present evidence that the timing and activity level of BLA stimulation are important factors for the induction and maintenance of long-term potentiation (LTP) in ventral hippocampal area CA1. A 100 Hz BLA co-stimulation facilitated the induction of LTP, whereas 200 Hz co-stimulation attenuated induction. A 100 Hz BLA co-stimulation also caused enhanced persistence, sufficient to prevent synaptic competition. This maintenance effect is likely through translational mechanisms, as mRNA expression of primary response genes was unaffected, whereas protein level of plasticity-related products was increased. Further understanding of the neural mechanisms of amygdala modulation on hippocampus could provide insights into the mechanisms of emotional disorders.

2022-03-03 | GSE197708 | GEO

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

Project description:Alternative polyadenylation (APA) refers to the regulated selection of polyadenylation sites (PASs) in transcripts, which affects the length of their 3’ untranslated regions (3’UTRs). APA regulates stage- and tissue-specific gene expression by affecting the stability, subcellular localization or translation rate of transcripts. We have recently shown that SRSF3 and SRSF7, two closely related SR proteins, link APA to mRNA export. However, the underlying mechanism for APA regulation by SRSF3 and SRSF7 remained unknown. Here, we combined iCLIP and 3’-end sequencing to find that both proteins bind upstream of proximal PAS (pPAS), but exert opposing effects on 3’UTR length. We show that SRSF7 enhances pPAS usage in a splicing-independent and concentration-dependent manner by recruiting the cleavage factor FIP1, thereby generating short 3’UTRs. SRSF7-specific domains that are absent in SRSF3 are necessary and sufficient for FIP1 recruitment. SRSF3 promotes long 3’UTRs by maintaining high levels of the cleavage factor Im (CFIm) via alternative splicing. Using iCLIP, we show that CFIm binds before and after the pPASs of SRSF3 targets, which masks them and inhibits polyadenylation. In the absence of SRSF3, CFIm levels are strongly reduced, which exposes the pPASs and leads to shorter 3’UTRs. Conversely, during cellular differentiation, 3’UTRs are massively extended, while the levels of SRSF7 and FIP1 strongly decline. Altogether, our data suggest that SRSF7 acts as a sequence-specific enhancer of pPASs, while SRSF3 inhibits pPAS usage by controlling CFIm levels. Our data shed light on a long-standing puzzle of how one factor (CFIm) can inhibit and enhance PAS usage.

2021-09-09 | PXD018090 | Pride

Mapping Gene Expression in Excitatory Neurons During Hippocampal Late-Phase Long-term Potentiation

Project description:The long-lasting changes in synaptic connectivity that underlie long-term memory require new RNA and protein synthesis for their persistence. To elucidate the temporal pattern of gene expression that gives rise to long-lasting, learning-related neuronal plasticity, we profiled RNAs in mouse hippocampal CA3-CA1 slices following induction of late phase long-term potentiation (LTP), analyzing differential expression (DE) specifically within pyramidal excitatory neurons by Translating Ribosome Affinity Purification RNA sequencing (TRAP-seq). We detected time-dependent changes in up- and down-regulated ribosome-associated mRNAs over the two hours following LTP induction, with minimal overlap of DE transcripts between time points. TRAP-seq revealed greater numbers and amplitudes of LTP-induced changes than RNA-seq of all cell types in the hippocampus. Transcripts that were DE by TRAP-seq but not RNA-seq were enriched in mRNAs encoding cytoskeletal and cell adhesion proteins, while RNA-seq identified DE in many non-neuronal mRNAs. Together our results highlight the importance of considering both the time course and the cell-type specificity of activity-dependent gene expression during memory formation.

2017-02-23 | GSE79790 | GEO

Alternative cleavage and polyadenylation analysis in an isoform-resolved way by Second- and Third-Generation Sequencing technologies

Project description:Alternative cleavage and polyadenylation (APA) is emerging as an important mechanism of gene regulation in eukaryotes and plays important regulatory roles in human development and diseases. Despite the widespread application of Second Generation Sequencing (SGS) technology for polyadenylation site identification, matching each identified polyadenylation site within a gene to its derived isoform remains a major challenge. To achieve the isoform-resolved APA analysis, we developed a tool termed “IDP-APA” that constructs truly expressed isoforms and identifies polyadenylation sites by integrating the respective strengths of Third Generation Sequencing (TGS) long reads and SGS short reads. Compared to existing tools, IDP-APA demonstrated superior performance in both isoform reconstruction and polyadenylation site identification. Applications to human embryonic stem cells, breast cancer cells and brain tissue from a patient with Alzheimer’s disease revealed prevalent APA events and cell-/tissue-specific APA patterns, especially in an isoform-resolved way.

2017-06-01 | GSE97688 | GEO

Gene profiling of VP16-CREB transgenic mice

Project description:Expression of VP16-CREB, a constitutively active form of CREB, in hippocampal neurons of the CA1 region lowers the threshold for eliciting the late, persistent phase of long-term potentiation (L-LTP) in the Schaffer collateral pathway. This VP16-CREB-mediated L-LTP differs from the conventional late phase of LTP in not being dependent on new transcription. This finding suggests that in the transgenic mice the mRNA transcript(s) encoding the protein(s) necessary for this form of L-LTP might already be present in CA1 neurons in the basal condition. We used high-density oligonucleotide arrays to identify the mRNAs differentially expressed in the hippocampus of transgenic and wild-type mice. Keywords: Genetic modification, time course

2006-01-12 | GSE3965 | GEO

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