Chd7-KO transcriptomic analysis
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA580505 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Mutations in the chromatin remodeller CHD7 cause CHARGE syndrome (CS). Importantly, children with CS exhibit moderate to severe neurological and behaviour symptoms including autism. However, the neural substrates underlying these symptoms remain largely unknown. Here we show that zebrafish chd7 mutant display a nighttime hyperactivity behavioural phenotype and exhibit altered number and positioning of GABAergic neurons in brain regions. Using a transcriptomic approach, we identified many genes involved in cell adhesion, migration and receptor signalling that are dysregulated in the chd7 brain. We also show an abnomal hyperactivation of ERK signalling contributing to the GABAergic defects. A phenotype-based screen of 3850 compounds identifies a lead compound, ephedrine that ameliorates GABAergic and behavioural anomalies in chd7 animals. Our study identifies CHD7 as critical regulator of GABAergic network development. Importantly, we provide novel insight into the mechanisms underlying the neurological deficits in CS and identify a new therapeutic for CS-associated neurobehavioural symptoms.
2019-10-31 | GSE139623 | GEO
Project description:Gene expression changes were measured between mouse ES cells of three genotypes: WT Chd7, Heterzygous Chd7 Null, Homozygous Chd7 Null. The hypothesis being tested was that CHD7, a chromatin remodeling protein, functions as a transcriptional regulator. This experiment was performed to detect gene targets of CHD7-mediated regulation. We report the genome-wide binding profile of CHD7, the protein implicated in CHARGE syndrome, in mouse ES cells using ChIP-Seq technology. Combining these data with other genomic datasets, we discover CHD7 to colocalize with other transcription factors including Oct4, Nanog, Sox2, and p300 at gene enhancer elements to regulate ES cell specific gene expression. Chd7 wildtype, heterozygous, and homozygous ES cells derived from preimplantation embryos were grown on feeder cells and total RNA was isolated using Trizol. The ratio of ES to feeder cells was estimated at 5:1. ChIP sequencing of CHD7 and p300 in mouse ES cells
2010-06-15 | E-GEOD-22341 | biostudies-arrayexpress
Project description:Transcriptomic analysis of Hela Ezrin Ko cells
| PRJNA1219224 | ENA
Project description:CD8+ T cells differentiate into two subpopulations in response to acute viral infection: memory precursor effector cells (MPECs) and short-lived effector cells (SLECs). MPECs and SLECs are epigenetically distinct; however, the epigenetic regulators required for formation of these subpopulations are mostly unknown. Here we performed an in vivo CRISPR screen in murine naive CD8+ T cells to identify the epigenetic regulators required for MPEC and SLEC formation, using the acute lymphocytic choriomeningitis virus (LCMV) Armstrong infection model. We identified the ATP-dependent chromatin remodeler chromodomain-helicase-DNA-binding-protein-7 (CHD7) as a positive regulator of SLEC formation, as knockout (KO) of Chd7 reduced SLECs numerically. In contrast, KO of Chd7 increased the formation of central memory T cells following pathogen clearance yet attenuated memory cell expansion following a rechallenge. These findings establish CHD7 as a novel positive regulator of SLEC and negative regulator of central memory T cell formation.
2024-09-23 | GSE274735 | GEO
Project description:CHD7 is a member of the chromodomain helicase DNA binding domain family of ATP-dependent chromatin remodeling enzymes. De novo mutation of the CHD7 gene is a major cause of CHARGE syndrome, a genetic disease characterized by a complex constellation of birth defects. To gain insight to the function of CHD7, we mapped the distribution of the CHD7 protein on chromatin using the approach of chromatin immunoprecipitation on tiled microarrays (ChIP-chip). These studies were performed in human colorectal carcinoma cells, human neuroblastoma cells, and mouse embryonic stem (ES) cells before and after differentiation into neural precursor cells. The results indicate that CHD7 localizes to discrete locations along chromatin that are specific to each cell type, and that the cell-specific binding of CHD7 correlates with a subset of histone H3 methylated at lysine 4 (H3K4me). The CHD7 sites change concomitantly with H3K4me patterns during ES cell differentiation, suggesting that H3K4me is part of the epigenetic signature that defines lineage-specific association of CHD7 with specific sites on chromatin. Furthermore, the CHD7 sites are predominantly located distal to transcription start sites, most often contained within DNase hypersensitive sites, frequently conserved, and near genes expressed at relatively high levels. These features are similar to those of gene enhancer elements, raising the possibility that CHD7 functions in enhancer mediated transcription, and that the congenital anomalies in CHARGE syndrome are due to alterations in transcription of tissue-specific genes normally regulated by CHD7 during development. ChIP-chip experiments were performed for CHD7 and H3K4 mono-,di-, and trimethylation modifications in 4 cells types: human DLD1 and SH-SY5Y; mouse ES and differentiated neural precursor cells derived from mouse ES cells. Microarrays used in these experiments tiled all or subset of ENCODE regions (in mouse, analogous ENCODE regions were assayed). At least two biological replicates were performed for each CHD7 ChIP experiment; H3K4 ChIP's were performed once in each cell type.
2009-01-22 | E-GEOD-14460 | biostudies-arrayexpress
Project description:Chd7 is an ATP-dependent chromatin-remodeling enzyme. We performed a microarray analysis to examine changes in gene expression between control and Chd7 knockdown astrocytes. The results provide insight into the function of Chd7 in astrocytes.
2025-10-21 | GSE275642 | GEO
Project description:Mutations in CHD7, encoding ATP-dependent chromodomain-helicase-DNA-binding protein 7, in CHARGE syndrome leads to multiple congenital anomalies including growth retardation, craniofacial malformations and neurological dysfunction. Currently, mechanisms underlying the CNS phenotypes remain poorly understood. Here, we show that Chd7 is a direct transcriptional target of oligodendrogenesis-promoting factors Olig2 and Brg1 and required for proper timing of CNS myelination and remyelination. Genome-occupancy analyses coupled with transcriptome profiling reveal that Chd7 cooperates with Sox10 to target the enhancers of key myelinogenic genes, and identify novel Chd7 target. Examination of Chd7 and Sox10 genomewide occupancy in differentiating oligodendrocytes
2016-02-29 | E-GEOD-72725 | biostudies-arrayexpress
Project description:CHD7 (Chromo-Helicase-DNA binding protein 7) is an ATP-dependent chromatin remodeler required for neural development. To elucidate the molecular mechanism of the function of CHD7 in neurodevelopment, we performed high-throughput sequencing by RNA-seq, ATAC-seq and CUT&Tag on day 14 human cortical organoids derived from control and CHD7 KO H9 hESCs , as well as RNA-seq and CUT&Tag on E10.5 mouse forebrain which Chd7 was specifically depleted in neuroepithelial cells. We found that CHD7 activates neural stem and progenitor cell-specific transcription factors via regulating chromatin accessibility and modification of histone marks H3K27me3 and H3K4me3 in both human cortical organoids and mouse forebrain.
2025-08-21 | GSE255569 | GEO
Project description:CHD7 (Chromo-Helicase-DNA binding protein 7) is an ATP-dependent chromatin remodeler required for neural development. To elucidate the molecular mechanism of the function of CHD7 in neurodevelopment, we performed high-throughput sequencing by RNA-seq, ATAC-seq and CUT&Tag on day 14 human cortical organoids derived from control and CHD7 KO H9 hESCs , as well as RNA-seq and CUT&Tag on E10.5 mouse forebrain which Chd7 was specifically depleted in neuroepithelial cells. We found that CHD7 activates neural stem and progenitor cell-specific transcription factors via regulating chromatin accessibility and modification of histone marks H3K27me3 and H3K4me3 in both human cortical organoids and mouse forebrain.
2025-08-21 | GSE255568 | GEO
Project description:CHD7 (Chromo-Helicase-DNA binding protein 7) is an ATP-dependent chromatin remodeler required for neural development. To elucidate the molecular mechanism of the function of CHD7 in neurodevelopment, we performed high-throughput sequencing by RNA-seq, ATAC-seq and CUT&Tag on day 14 human cortical organoids derived from control and CHD7 KO H9 hESCs , as well as RNA-seq and CUT&Tag on E10.5 mouse forebrain which Chd7 was specifically depleted in neuroepithelial cells. We found that CHD7 activates neural stem and progenitor cell-specific transcription factors via regulating chromatin accessibility and modification of histone marks H3K27me3 and H3K4me3 in both human cortical organoids and mouse forebrain.
2025-08-21 | GSE255571 | GEO