Nono deficiency impedes the proliferation and adhesion of H9c2 cardiomyocytes through Pi3k/Akt signaling pathway [ATAC-seq]
Ontology highlight
ABSTRACT:
ORGANISM(S): Rattus norvegicus
PROVIDER: GSE211403 | GEO | 2023/05/01
REPOSITORIES: GEO
Similar Datasets
Project description:Purpose: Congenital heart disease (CHD) is the most common type of birth defect and the main noninfectious cause of death during the neonatal stage. Currently, hemizygous loss-of-function variants in NONO(The non-POU domain containing, octamer-binding) gene have been described as the cause of congenital heart defects in males. However, the effects of NONO on cardiac development have not been fully elucidated.
2023-05-01 | GSE211401 | GEO
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
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 | GSE236888 | GEO
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
Project description:We identified non-POU domain-containing octamer-binding protein (NONO), a Drosophila behavior human splicing (DBHS) protein, among the most upregulated mRNA splicing factors in glioblastoma multiforme (GBM). NONO was associated with poor prognosis in GBM patients, and overexpression of NONO promoted GBM cell proliferation, invasion and tumorigenesis in a GBM orthotopic xenograft model. Through RNA sequencing based transcriptomic profiling, we found that knockdown of NONO resulted in global changes in alternative splicing-intron retention, and identified GPX1 and CCN1 as two pre-mRNAs targeted by NONO. NONO directly bound to the intron of GPX1 pre-mRNA through the RNA-recognition motifs 2 (RRM2) domain and required interaction with another DBHS protein family member, PSPC1. Knockdown of NONO interfered with redox homeostasis in cells, at least partially, through abnormal splicing of GPX1. Finally, Auranofin, a small-molecule inhibitor targeting NONO, inhibited GBM growth in an orthotopic xenograft model in mice. Taken together, our data revealed that NONO was a key regulator of mRNA splicing in GBM, and that targeting NONO represents a novel and effective therapeutic strategy for the treatment of GBM.
2022-08-03 | GSE190950 | GEO
Project description:Non-POU domain-containing octamer-binding protein (NONO) is a multifunctional member of the Drosophila behavior/human splicing (DBHS) protein family with DNA- and RNA-binding activity. Recent studies revealed that NONO is O-GlcNAcylated and dysregulated in various types of cancer. Excessive O-GlcNAcylation of target proteins has also been implicated in tumorigenesis. However, it is not known whether O-GlcNAcylation of NONO promotes cancer cell growth, and little is known about the effect of O-GlcNAcylation on the biological properties of NONO. This study identifies Thr440 as the primary NONO O-GlcNAcylation site and demonstrates its crucial role in the assembly of paraspeckles, an important subnuclear compartment that facilitates NONO-dependent transcriptional regulation in mammalian cells. We demonstrated that O-GlcNAcylation of NONO is required to maintain the expression of genes related to GO category “microtubule cytoskeleton organization involved in mitosis” and to suppress the expression of genes related to GO category “cellular response to type I interferon”. Moreover, stable depletion of NONO O-GlcNAcylation or NONO knockout significantly inhibited the growth of colon cancer cells. These findings highlight the importance of NONO and its O-GlcNAcylation status in modulating cell cycle progression, immune response, and tumorigenesis.
2024-06-01 | GSE262460 | GEO
Project description:We identified non-POU domain-containing octamer-binding protein (NONO), a Drosophila behavior human splicing (DBHS) protein, among the most upregulated mRNA splicing factors in glioblastoma multiforme (GBM). NONO was associated with poor prognosis in GBM patients, and overexpression of NONO promoted GBM cell proliferation, invasion and tumorigenesis in a GBM orthotopic xenograft model. Through RNA sequencing based transcriptomic profiling, we found that knockdown of NONO resulted in global changes in alternative splicing-intron retention, and identified GPX1 and CCN1 as two pre-mRNAs targeted by NONO. NONO directly bound to the intron of GPX1 pre-mRNA through the RNA-recognition motifs 2 (RRM2) domain and required interaction with another DBHS protein family member, PSPC1. Knockdown of NONO interfered with redox homeostasis in cells, at least partially, through abnormal splicing of GPX1. Finally, Auranofin, a small-molecule inhibitor targeting NONO, inhibited GBM growth in an orthotopic xenograft model in mice. Taken together, our data revealed that NONO was a key regulator of mRNA splicing in GBM, and that targeting NONO represents a novel and effective therapeutic strategy for the treatment of GBM.
2022-08-03 | GSE191021 | GEO
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 | GSE236899 | GEO
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 | GSE236884 | GEO
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 | GSE236882 | GEO