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Nono stimulates the DNA damage response by mediating the induction of Gadd45b [RNA-seq]

ABSTRACT: Nono stimulates the DNA damage response by mediating the induction of Gadd45b [RNA-seq]

PROVIDER: PRJNA1053336 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27227159_1.fastq.gz	Fastqsanger.gz
	SRR27227159_2.fastq.gz	Fastqsanger.gz
	SRR27227160_1.fastq.gz	Fastqsanger.gz
	SRR27227160_2.fastq.gz	Fastqsanger.gz
	SRR27227161_1.fastq.gz	Fastqsanger.gz

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Nono stimulates the DNA damage response by mediating the induction of Gadd45b

Project description:Nono stimulates the DNA damage response by mediating the induction of Gadd45b

| PRJNA1053326 | ENA

Nono stimulates the DNA damage response by mediating the induction of Gadd45b [RNA-seq]

Project description:RNA-binding proteins (RBPs) are frequently deregulated in cancer and emerge as effectors of the DNA damage response (DDR). The non-POU domain-containing octamer-binding protein NONO/p54nrb is a multi-functional RBP that modulates the production and processing of mRNA in unperturbed cells, but also promotes the repair of DNA double-strand breaks (DSBs). Here, we investigate the impact of Nono deletion in the murine cell-based lung cancer model KP (KRasG12D, Trp53-/-). We show that the deletion of Nono impairs the response to DSBs induced by the topoisomerase-II inhibitor etoposide. Nono-deficient KP (KPN) cells display prolonged activation of DSB signaling and an increased amount of DSBs. The defects in the DDR are accompanied with reduced RNAPII promoter occupancy, elevated levels of DNA-RNA-hybrids (R-loops), and attenuated induction of the DDR factor growth arrest and DNA damage inducible beta (Gadd45b). Our data suggest a Nono-mediated, genome-protective crosstalk of the DDR with the RNA metabolism. Our data characterise Gadd45b as putative Nono-dependent effector of the DDR and suggest that Nono mediates a genome-protective crosstalk of the DDR with the RNA metabolism via induction of Gadd45b.

2024-06-04 | GSE250301 | GEO

Nono stimulates the DNA damage response by mediating the induction of Gadd45b [CUT&Run]

2024-06-04 | GSE250297 | GEO

Nono stimulates the DNA damage response by mediating the induction of Gadd45b [CUT&Run]

Project description:Nono stimulates the DNA damage response by mediating the induction of Gadd45b [CUT&Run]

| PRJNA1053329 | ENA

Nono stimulates the DNA damage response by mediating the induction of Gadd45b

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

2024-06-04 | GSE250302 | GEO

NONO mutations cause syndromic intellectual disability and inhibitory synaptic defects

Project description:Identifying causes of sporadic intellectual disability remains a considerable medical challenge. Here, we demonstrate that null mutations in the NONO gene, a member of the Drosophila Behavior Human Splicing (DBHS) protein family, are a novel cause of X-linked syndromic intellectual disability. Comparing humans to Nono-deficient mice revealed related behavioral and craniofacial anomalies, as well as global transcriptional dysregulation. Nono-deficient mice also showed deregulation of a large number of synaptic transcripts, causing a disorganization of inhibitory synapses, with impaired postsynaptic scaffolding of gephyrin. Alteration of gephyrin clustering could be rescued by over-expression of Gabra2 in NONO-compromised neurons. These findings link NONO to intellectual disability and first highlight the key role of DBHS proteins in functional organization of GABAergic synapses.

2015-09-02 | E-MTAB-2895 | biostudies-arrayexpress

NONO mutations cause syndromic intellectual disability and inhibitory synaptic defects

2015-09-02 | E-MTAB-2894 | biostudies-arrayexpress

Nucleolar detention of NONO shields DNA double-strand breaks form aberrant transcripts

Project description:RNA-binding proteins emerge as effectors of the DNA damage response (DDR). The multifunctional non-POU domain-containing octamer-binding protein NONO/p54nrb marks nuclear paraspeckles in unperturbed cells, but also undergoes re-localization to the nucleolus upon induction of DNA double-strand breaks (DSBs). However, NONO nucleolar re-localization is poorly understood. Here we show that the topoisomerase II inhibitor etoposide stimulates the production of RNA polymerase II-dependent, DNA damage-inducible antisense intergenic non-coding RNA (asincRNA) in human cancer cells. Such transcripts originate from distinct nucleolar intergenic spacer regions and form DNA–RNA hybrids to tether NONO to the nucleolus in an RNA recognition motif 1 domain-dependent manner. NONO occupancy at protein-coding gene promoters is reduced by etoposide, which attenuates pre-mRNA synthesis, enhances NONO binding to pre-mRNA transcripts and is accompanied by nucleolar detention of a subset of such transcripts. The depletion or mutation of NONO interferes with detention and prolongs DSB signalling. Together, we describe a nucleolar DDR pathway that shields NONO and aberrant transcripts from DSBs to promote DNA repair.

2024-01-16 | GSE233594 | GEO

RNA binding properties of NONO and NONO-delta-ER in testis;

Project description:To investigate the RNA binding proterties of NONO and NONO-delta-ER in testis; we collected adult NONO and NONO-delta-ER mice testis We then performed eCLIP-seq respectively and convey subsequent bioinformatic analysis.

2024-08-08 | GSE263329 | GEO

Nucleolar detention of NONO shields DNA double-strand breaks from aberrant transcripts [BLISS]

Project description:RNA-binding proteins emerge as effectors of the DNA damage response (DDR). The multifunctional non-POU domain-containing octamer-binding protein NONO/p54nrb marks nuclear paraspeckles in unperturbed cells, but also undergoes re-localisation to the nucleolus upon induction of DNA double-strand breaks (DSBs). However, NONO nucleolar re-localisation is poorly understood. Here we show that the topoisomerase-II inhibitor etoposide stimulates the production of RNA polymerase II-dependent, DNA damage-induced nucleolar antisense RNAs (diNARs) in human cancer cells. diNARs originate from distinct nucleolar intergenic spacer regions and form DNA-RNA hybrids to tether NONO to the nucleolus in ab RRM1 domain-dependent manner. NONO occupancy at protein-coding gene promoters is reduced by etoposide, which attenuates pre-mRNA synthesis, enhances NONO binding to pre-mRNA transcripts and is accompanied by nucleolar detention of a subset of such transcripts. The depletion or mutation of NONO interferes with detention and prolongs DSB signaling. Together, we describe a nucleolar DDR pathway that shields NONO and aberrant transcripts from DSBs to promote DNA repair.

2024-01-16 | GSE236886 | GEO

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