INO80 complex assembly is antagonized by PRC2.
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA381703 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5417210_1.fastq.gz | Fastqsanger.gz | |||
| SRR5417210_2.fastq.gz | Fastqsanger.gz | |||
| SRR5417220.fastq.gz | Fastqsanger.gz | |||
| SRR5417230.fastq.gz | Fastqsanger.gz | |||
| SRR5417240.fastq.gz | Fastqsanger.gz |
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Project description:INO80 complex is an ATPase-dependent chormatin remodeling complex, which regulates various DNA metabolic processes such as DNA replication and repair. Additionally, INO80 complex also contributes to the regulation of gene expression in sterss response and development. In order to investigate the function of INO80 complex in rhabdomyosarcoma, we examined the knockdown of subunits of INO80 complex Actr5, Ies6, and Ino80 in human rhabdomyosarcoma RD cells. As a result, it was found that INO80 complex is involved in the sarcomagenicity and the disregulation of myogenic properties of rhabdomyosarcoma cells.
2022-04-01 | GSE169681 | GEO
Project description:Centromere is the chromosomal locus at which kinetochore is assembled to direct chromosome segregation. Histone H3 variant CENP-A epigenetically marks active centromeres; however, the mechanism by which CENP-A propagates at the centromere, replacing histone H3, remains poorly understood. Using fission yeast, we find that CENP-ACnp1 chromatin assembly at the centromere requires the Ino80 ATP-dependent chromatin remodeling complex which removes histone H3-containing nucleosomes from associated chromatin. CENP-ACnp1 chromatin actively recruits the Ino80 complex to centromeres to elicit eviction of histone H3-containing nucleosomes. Artificial targeting of Ino80 subunits to a non-centromeric DNA placed in a native centromere enhances the spreading of CENP-ACnp1 chromatin into the non-centromeric DNA. Based on these results, we propose that CENP-ACnp1 chromatin employs the Ino80 complex to mediate replacement of histone H3 with CENP-ACnp1, and thereby reinforces itself.
2017-07-14 | GSE99589 | GEO
Project description:We mapped 4 subunits of the INO80 complex using ChIP-seq in HepG2 liver cancer cells. We found a subclass of sites occupied by the INO80 ATPase subunit, but not by any accessory subunits that we call 'Non-canonical' INO80 sites. These sites are characterized by repressed chromatin.
2018-01-23 | GSE107730 | GEO
Project description:ATP-dependent chromatin remodeling complexes are essential for transcription regulation, and yet it is unclear how these multisubunit complexes coordinate their activities to facilitate diverse transcriptional responses. In this study, we found that the conserved Arp5 and Ies6 subunits of the Saccharomyces cerevisiae INO80 chromatin-remodeler form an abundant and distinct subcomplex in vivo and stimulate INO80-mediated activity in vitro. Moreover, our genomic studies reveal that the relative occupancy of Arp5-Ies6 correlates with nucleosome positioning at transcriptional start sites and expression levels of >1,000 INO80- regulated genes. Notably, these genes are significantly enriched in energy metabolism pathways. Specifically, arp5d, ies6d, and ino80d mutants demonstrate decreased expression of genes involved in glycolysis and increased expression of genes in the oxidative phosphorylation pathway. Deregulation of these metabolic pathways results in constitutively elevated mitochondrial potential and oxygen consumption. Our results illustrate the dynamic nature of the INO80 complex assembly and demonstrate for the first time that a chromatin remodeler regulates glycolytic and respiratory capacity, thereby maintaining metabolic stability.
2016-01-26 | GSE77257 | GEO
Project description:We mapped 4 subunits of the INO80 complex using ChIP-seq in HepG2 and Huh7 liver cancer cell lines. We found a subclass of sites occupied by the INO80 ATPase subunit, but not by any accessory subunits that we call 'Autonomous' INO80 sites. These sites are present in both HepG2 and Huh7 cells and are characterized by repressed chromatin. Relief of reprissive histone modifications thorugh EZH2 inhbiition led to the increase in H3K27ac at INO80 targets.
2020-04-01 | GSE97411 | GEO
Project description:During transcription, nucleosomes are evicted from regulatory and coding regions yet chromatin structure is stable. Restoration of chromatin structure involves concerted action of chromatin modifying activities. Our analysis demonstrates a genome wide function of the INO80 remodeling complex for stable repositioning of the nucleosome immediately proximal to the transcription initiation site. INO80 dependent remodeling of the promoter proximal nucleosomes has a global repressive role. Recruitment of INO80 to proximal nucleosomes overlaps with the elongating Polymerase II complex assembly. The amount of associated Polymerase II at start sites correlates with INO80 recruitment for inducible and constantly transcribed genes. Furthermore, at highly inducible promoters INO80 is required for repression of bidirectional transcription. Therefore, we suggest a function for INO80 after transcription initiation to achieve Polymerase II dependent reassembly of promoter proximal nucleosomes.
2016-12-24 | E-MTAB-1810 | biostudies-arrayexpress
Project description:Embryonic stem cell (ESC) self-renewal and pluripotency is controlled by the coordinated action of transcription factors and chromatin regulators. Compared to the pluripotency transcription factors, the function of the chromatin regulators, especially the ATP-dependent chromatin remodelers, remains poorly understood in ESCs. Here, we show that INO80, a SWI/SNF family chromatin remodeling complex, is essential for ESC self-renewal, pluripotency, somatic cell reprogramming, and embryonic development. Ino80, the ATPase of the complex, forms an auto-regulatory loop with the ESC master transcription factors Oct4, Nanog, and Sox2. More importantly, it co-occupies the enhancer regions of most key pluripotency genes with the master transcription factors, and positively regulates their expression by maintaining an open chromatin structure. Our data suggests that INO80 is an integral component of the pluripotency transcription network, and plays a critical role in both the maintenance and establishment of pluripotency Identification of Ino80 localization in mouse embryonic stem cells
2014-05-16 | E-GEOD-49137 | biostudies-arrayexpress
Project description:INO80 is involved in many chromatin-dependent functions. However, its role in pluripotency has not been fully defined. We examined the impact of Ino80 deletion in the naïve and primed pluripotent stem cells. We found that Ino80 deletion had minimal effect on self-renewal and gene expression in the naïve state, but led to cellular differentiation and de-repression of developmental genes in the primed state. Mechanistically, INO80 co-occupied gene promoters that were bivalently marked by H3K4me3 and H3K27me3. Further, its occupancy was required for H3K27me3 installation and maintenance, as well as downstream gene repression. Finally, INO80 promoted H2A.Z occupancy at the bivalent domains, which in turn facilitated the polycomb repressive complex 2 (PRC2) recruitment. Together, our results identified the INO80-H2A.Z axis as an essential step for bivalent chromatin and poised gene expression and uncovered an epigenetic mechanism by which chromatin remodeling, histone variant, and histone modification coordinately control cell fate.
2021-07-04 | GSE158533 | GEO
Project description:INO80 is involved in many chromatin-dependent functions. However, its role in pluripotency has not been fully defined. We examined the impact of Ino80 deletion in the naïve and primed pluripotent stem cells. We found that Ino80 deletion had minimal effect on self-renewal and gene expression in the naïve state, but led to cellular differentiation and de-repression of developmental genes in the primed state. Mechanistically, INO80 co-occupied gene promoters that were bivalently marked by H3K4me3 and H3K27me3. Further, its occupancy was required for H3K27me3 installation and maintenance, as well as downstream gene repression. Finally, INO80 promoted H2A.Z occupancy at the bivalent domains, which in turn facilitated the polycomb repressive complex 2 (PRC2) recruitment. Together, our results identified the INO80-H2A.Z axis as an essential step for bivalent chromatin and poised gene expression and uncovered an epigenetic mechanism by which chromatin remodeling, histone variant, and histone modification coordinately control cell fate.
2021-07-04 | GSE158528 | GEO
Project description:INO80 is involved in many chromatin-dependent functions. However, its role in pluripotency has not been fully defined. We examined the impact of Ino80 deletion in the naïve and primed pluripotent stem cells. We found that Ino80 deletion had minimal effect on self-renewal and gene expression in the naïve state, but led to cellular differentiation and de-repression of developmental genes in the primed state. Mechanistically, INO80 co-occupied gene promoters that were bivalently marked by H3K4me3 and H3K27me3. Further, its occupancy was required for H3K27me3 installation and maintenance, as well as downstream gene repression. Finally, INO80 promoted H2A.Z occupancy at the bivalent domains, which in turn facilitated the polycomb repressive complex 2 (PRC2) recruitment. Together, our results identified the INO80-H2A.Z axis as an essential step for bivalent chromatin and poised gene expression and uncovered an epigenetic mechanism by which chromatin remodeling, histone variant, and histone modification coordinately control cell fate.
2021-07-04 | GSE158537 | GEO