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PQBP1 regulates striatum development through balancing striatal progenitor proliferation and differentiation

ABSTRACT: PQBP1 regulates striatum development through balancing striatal progenitor proliferation and differentiation

PROVIDER: PRJNA935784 | ENA |

REPOSITORIES: ENA

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PQBP1 regulates striatum development through balancing striatal progenitor proliferation and differentiation

Project description:The balance between cell proliferation and differentiation is essential for maintaining the neural progenitor pool and brain development. Although the mechanisms underlying cell proliferation and differentiation at the transcriptional level have been studied intensively, post-transcriptional regulation of cell proliferation and differentiation remains largely unclear. Here, we show that deletion of the alternative splicing regulator PQBP1 in striatal progenitors resulted in defective striatal development due to impaired neurogenesis of spiny projection neurons (SPNs). Pqbp1 deficiency striatal progenitors exhibit declined proliferation and increased differentiation, resulting in a reduced striatal progenitor pool. We further reveal that PQBP1 associates with components in splicing machinery. The alternative splicing profiles identify that PQBP1 promotes the exon 9 inclusion of Numb, a variant that mediates progenitor proliferation. These findings identify PQBP1 as a novel regulator in balancing striatal progenitor proliferation and differentiation and provide alternative insights into the pathogenic mechanisms underlying Renpenning syndrome.

2023-02-21 | GSE225486 | GEO

PQBP1-associated proteins spectrums in HEK-293 cells

Project description:Our study shows that deletion of the alternative splicing regulator PQBP1 in striatal progenitors resulted in defective striatal development due to impaired neurogenesis of spiny projection neurons (SPNs). Therefore, we further reveal that PQBP1 associated with components in splicing machinery by LC-MS/MS. These findings identify PQBP1 as a novel regulator in balancing striatal progenitor proliferation and differentiation.

2023-03-16 | PXD040439 | Pride

RNA sequencing (RNA-seq) of PQBP1 knockdown in ovarian cancer cells

Project description:To investigate the comprehensive function of PQBP1 in the regulation of RNA splicing, we established Dox-inducible PQBP1 knockdown HEY cell line. We then performed gene expression profiling analysis using data obtained from RNA-seq of PQBP1 knockdown and control HEY cells (three biological replications of each sample).

2024-05-01 | GSE223091 | GEO

SpyTag-based CLIP (SpyCLIP) sequencing of PQBP1 in ovarian cancer cells

Project description:Dysregulated expression of splicing factors has important roles in cancer development and progression. However, it remains a major challenge to identify the cancer-specific splicing variants. Here we demonstrated that splicing factor PQBP1 is commonly overexpressed in high-grade serous ovarian carcinoma (HGSOC) and high level of PQBP1 is associated with poor prognosis. To gain global insights into PQBP1-RNA binding property, RNA immunoprecipitation sequencing (RIP-seq) and SpyTag-based CLIP (SpyCLIP) were performed to analysis the interaction between PQBP1 and the target RNA.

2024-05-01 | GSE223196 | GEO

RNA immunoprecipitation sequencing (RIP-seq) of PQBP1 in ovarian cancer cells

2024-05-01 | GSE223090 | GEO

Long-read nanopore sequencing (Nanopore-seq) of PQBP1 knockdown in ovarian cancer cells

Project description:To investigate the comprehensive function of PQBP1 in the regulation of RNA splicing, we established Dox-inducible PQBP1 knockdown HEY cell line. We then performed transcript expression profiling analysis using data obtained from long-read nanopore-seq of PQBP1 knockdown and control HEY cells (three biological replications of each sample).

2024-05-01 | GSE223088 | GEO

Microarray profiling of STEP knockout mouse striatum

Project description:STEP (striatal-enriched tyrosine phosphatase) is a brain-specific phosphatase named for its robust expression in striatum. Brains from homozygous and heterozygous STEP knockout mice and wild-type littermates were harvested, and striatum microdissected. RNA was extracted and hybridized to Affymetrix 230_2 microarray chips. n=4-5 per group. Wild-type littermates were compared with STEP +/- and -/-

2014-06-23 | E-GEOD-51678 | biostudies-arrayexpress

Microarray profiling of STEP knockout mouse striatum

2014-06-23 | GSE51678 | GEO

Transcriptome analysis of human fetal striatal & neocortical samples along with in vitro differentiated primary neurons

Project description:Transcriptional profiling identifies human fetal striatum and neocortex signatures. A minimal core of transcription factors delineates developing human striatal domains. The spatio-temporal co-expression map of striatal cell fate determinants is dynamic.

2014-11-01 | E-MTAB-1918 | biostudies-arrayexpress

Next-generation sequencing identifies mRNAs targets that experience significant changes in alternative splicing upon PQBP1 knockdown in mouse embryonic cortical neurons

Project description:PQBP1 is a highly conserved protein closely related to neurodegenerative disorders. We identified PQBP1 as an important alternative splicing effector necessary for maintaining normal neuron functions in the brain. In order to explore PQBP1's functions in alternative splicing regulation and neuronal activities, we systematically profiled the alternative splicing targets of PQBP1 in mouse embryonic cortical neurons by RNA-seq. The mRNAs whose alternative splicing are affected by PQBP1 showed tissue-specific functional enrichment especially in neurite outgrowth, with strong Gene Ontology (GO) enrichments for neuron projection development/morphogenesis, dendrite development and axonogenesis. PQBP1's alternative splicing targets are also functionally enriched in RNA splicing, chromatin modification, and ARF signal transduction. We applied RNA-seq to compare the transcriptomes of mock and PQBP1 knockdown mouse embryonic cortical neuron samples.

2013-03-15 | E-GEOD-44402 | biostudies-arrayexpress

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