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Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [PRO-seq]

ABSTRACT: Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [PRO-seq]

PROVIDER: PRJNA1090438 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR28408655_1.fastq.gz	Fastqsanger.gz
	SRR28408655_2.fastq.gz	Fastqsanger.gz
	SRR28408656_1.fastq.gz	Fastqsanger.gz
	SRR28408656_2.fastq.gz	Fastqsanger.gz
	SRR28408657_1.fastq.gz	Fastqsanger.gz

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Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [PRO-seq]

Project description:MicroRNAs (miRNAs) play crucial roles in physiological functions and diseases such as cancer, but the regulation of their nuclear biogenesis remains poorly understood. Here, BioID on Drosha, the catalytic subunit of the microprocessor complex, revealed its proximity to SFPQ, a multifunctional RNA-binding protein (RBP) notably involved in forming the paraspeckle nuclear condensates. SFPQ depletion impacted both primary and mature miRNA expression, while other crucial paraspeckle proteins or the paraspeckle scaffolding lncRNA NEAT1 did not, indicating a unique paraspeckle-independent role. Comprehensive transcriptomic analyses showed that SFPQ loss broadly affects RNA and miRNA host gene (miRNA HG) expression, influencing both their transcription and stability. Notably, SFPQ protects specific miRNA HGs, including the oncogenic miR-17~92 polycistron, from degradation by the nuclear NEXT-exosome complex. Lastly, we show that high SFPQ is tightly linked with overexpression miR-17~92 and its mature miRNAs across a broad variety of cancers. Our findings reveal a dual role for SFPQ in the regulation of miRNA HGs transcription and stability, as well as its significance in cancers.

2024-09-04 | GSE262127 | GEO

Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [miRNA-seq]

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Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [RNA-seq]

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Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [miRNA-seq]

Project description:Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [miRNA-seq]

| PRJNA1090437 | ENA

Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [RNA-seq]

Project description:Paraspeckle-Independent Co-Transcriptional Regulation of Nuclear microRNA Biogenesis by SFPQ [RNA-seq]

| PRJNA1090439 | ENA

The RNA-binding protein SFPQ preserves long-intron splicing and regulates circRNA biogenesis

Project description:Circular RNAs (circRNAs) represent an abundant and conserved entity of non-coding RNAs, however the principles of biogenesis are currently not fully understood. To elucidate features important for circRNA production, we performed global analyses of RNA-binding proteins associating with the flanking introns of circRNAs, and we identified two factors, SFPQ and NONO, to be highly enriched with circRNAs. We observe a subclass of circRNAs, coined DALI circRNAs, with distal inverted Alu elements and long introns to be highly deregulated upon SFPQ knockdown. Moreover, SFPQ depletion leads to increased intron retention with concomitant induction of cryptic splicing prevalent for long introns causing in some cases premature transcription termination and polyadenylation. Aberrant splicing in the upstream and downstream regions of circRNA producing exons are critical for shaping the circRNAome, and specifically, we identify a conserved impact of missplicing in the immediate upstream region to drive circRNA biogenesis. Collectively, our data show that SFPQ plays an important role in maintaining intron integrity by ensuring accurate splicing of long introns, and disclose novel features governing Alu-independent circRNA production.

2020-09-09 | GSE157622 | GEO

SFPQ interacted proteins in HEK293T nucleus and cytoplasm

Project description:Splicing factor proline and glutamine rich (SFPQ), DNA- and RNA binding protein, is crucial in various nuclear processes, including paraspeckle formation, miRNA synthesis and specially in transcription regulation. In addition, SFPQ play a role in the innate immune response to viruses, including DNA and RNA viruses. However, the connections between SFPQ and EMCV infection remain unclear. Here we report that the SFPQ is essential for EMCV replication. Depletion of SFPQ impairs EMCV production, while forced expression of SFPQ could promote viral replication. Mechanistically, EMCV inhibited viral RNA-mediated type I IFN and IL6 production to eliminate host antiviral immune responses. Cellular SFPQ was cleaved by the EMCV proteinase then entered the cytoplasm and interacted with other ribosomal proteins to facilitate its internal ribosome entry site (IRES)-dependent translation. Moreover, loss of SFPQ may impress host translation related gene expression and thus facilitate the EMCV replication. Altogether, our work provides a possible target for resisting EMCV or EMCV-like virus’s infection.

2019-01-10 | PXD011865 | Pride

MUC1-C REGULATES NEAT1 lncRNA EXPRESSION AND PARASPECKLE FORMATION IN CANCER STEM CELLS

Project description:MUC1-C subunit plays an essential role in regulating NEAT1 expression. MUC1-C activates the NEAT1 gene with induction of the NEAT1_1 and NEAT1_2 isoforms by NF-kB- and MYC-mediated mechanisms. MUC1-C/MYC signaling also induces expression of the SFPQ, NONO and FUS RNA binding proteins (RBPs) that associate with NEAT1_2 and are necessary for paraspeckle formation.

2024-04-08 | GSE247441 | GEO

Microarray of zebrafish (Danio rerio) sfpq-/-;Tg(mnx1:GFP) against sfpq+/+;Tg(mnx1:GFP) and sfpq+/-;Tg(mnx1:GFP) siblings at 24 hpf

Project description:Phenotypic characterisation of our zebrafish sfpq homozygous mutants revealed a restricted set of specific defects, unexpected for a protein expressed ubiquitously and involved in such general mechanisms. The CNS was prominently affected, showing brain boundary and axonal defects associated with absence of motility. To investigate a possible specificity in SFPQ functional targets by microarray RNA profiling analysis, comparing the transcriptome of the sfpq homozygous mutants with its wild type and heterozygous siblings at the earliest stage at which the phenotype is robustly recognizable.

2017-09-01 | E-MTAB-5559 | biostudies-arrayexpress

The RNA-binding protein SFPQ preserves long-intron splicing and regulates circRNA biogenesis

Project description:The RNA-binding protein SFPQ preserves long-intron splicing and regulates circRNA biogenesis

| PRJNA662248 | ENA