Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Multi-omic profiling of the developing human cerebral cortex at the single cell level [snRNA-seq]

ABSTRACT: Human brain development starts during embryogenesis and extends postnatally to adulthood. During this time, the cellular complexity of the brain is established via dynamic changes in gene expression, mediated, in part, by the spatiotemporal activity of cis-regulatory elements. To better understand these processes, we performed simultaneous profiling of gene expression and chromatin accessibility in 45,549 individual nuclei, isolated from the human cortex across 6 broad developmental time-points from fetus to adult. We identified cell-type specific domains in which chromatin accessibility is highly correlated with gene expression. Differentiation pseudotime trajectories of gene expression in neuronal subpopulations indicate that chromatin accessibility at cis-regulatory elements precedes transcription and that dynamic changes in chromatin structure play a critical role in neuronal lineage commitment. In addition, using lineage-specific genes and peaks, we mapped cell-type specific genetic loci implicated in neuropsychiatric traits, including schizophrenia, major depressive disorder and bipolar disorder. Together, our results describe the complex regulation of cell composition at critical stages in lineage determination, serve as a developmental blueprint of the human brain and shed light on the impact of spatiotemporal alterations in gene expression on neuropsychiatric disease.

ORGANISM(S): Homo sapiens

PROVIDER: GSE204683 | GEO | 2023/10/12

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Multi-omic profiling of the developing human cerebral cortex at the single cell level [snATAC-seq]

Project description:Human brain development starts during embryogenesis and extends postnatally to adulthood. During this time, the cellular complexity of the brain is established via dynamic changes in gene expression, mediated, in part, by the spatiotemporal activity of cis-regulatory elements. To better understand these processes, we performed simultaneous profiling of gene expression and chromatin accessibility in 45,549 individual nuclei, isolated from the human cortex across 6 broad developmental time-points from fetus to adult. We identified cell-type specific domains in which chromatin accessibility is highly correlated with gene expression. Differentiation pseudotime trajectories of gene expression in neuronal subpopulations indicate that chromatin accessibility at cis-regulatory elements precedes transcription and that dynamic changes in chromatin structure play a critical role in neuronal lineage commitment. In addition, using lineage-specific genes and peaks, we mapped cell-type specific genetic loci implicated in neuropsychiatric traits, including schizophrenia, major depressive disorder and bipolar disorder. Together, our results describe the complex regulation of cell composition at critical stages in lineage determination, serve as a developmental blueprint of the human brain and shed light on the impact of spatiotemporal alterations in gene expression on neuropsychiatric disease.

2023-10-12 | GSE204682 | GEO

A comparative atlas of single-cell chromatin accessibility in the human brain

Project description:A comparative atlas of single-cell chromatin accessibility in the human brainRecent advances in single-cell transcriptomics have illuminated the diverse neuronal and glial cell types within the human brain. However, the regulatory programs governing cell identity and function remain unclear. Using a single-nucleus assay for transposase-accessible chromatin using sequencing (ATAC-seq), we explored open chromatin landscapes across 1.1 million cells in 42 brain regions from three adults. Integrating this data unveiled 107 distinct cell types and their specific utilization of 544,735 candidate cis-regulatory DNA elements (cCREs) in the human genome. Nearly a third of the cCREs demonstrated conservation and chromatin accessibility in the mouse brain cells. We reveal strong links between specific brain cell types and neuropsychiatric disorders including schizophrenia, bipolar disorder, Alzheimer’s disease (AD), and major depression, and have developed deep learning models to predict the regulatory roles of noncoding risk variants in these disorders.

2023-10-04 | GSE244618 | GEO

An Atlas of Chromatin Accessibility in the Adult Human Brain

Project description:The majority of common genetic risk variants associated with neuropsychiatric disease are non-coding and are thought to exert their effects by disrupting the function of cis regulatory elements (CREs), including promoters and enhancers. Within each cell, chromatin is arranged in specific patterns to expose the repertoire of CREs required for optimal spatiotemporal regulation of gene expression. To further our understanding of the complex mechanisms that modulate transcription in the brain, we utilized frozen postmortem samples to generate the largest human brain and cell type-specific open chromatin dataset to date. Using the Assay for Transposase Accessible Chromatin followed by sequencing (ATAC-seq), we created maps of chromatin accessibility in 2 cell types (neurons and non-neurons) across 14 distinct brain regions of 5 individuals. Chromatin structure varies markedly by cell type, with neuronal chromatin displaying higher regional variability than that of non-neurons. Among our findings is an open chromatin region (OCR) specific to neurons of the striatum. When placed in the mouse, a human sequence derived from this OCR recapitulates the cell-type and regional expression pattern predicted by our ATAC-seq experiments. Furthermore, differentially accessible chromatin overlaps with the genetic architecture of neuropsychiatric traits and identifies differences in molecular pathways and biological functions. By leveraging transcription factor binding analysis, we identify protein coding and long noncoding RNAs (lncRNAs) with cell-type and brain region specificity. Our data provides a valuable resource to the research community and we provide this human brain chromatin accessibility atlas as an online database “Brain Open Chromatin Atlas (BOCA)” to facilitate interpretation.

2018-06-21 | GSE96949 | GEO

Transcriptome and chromatin accessibility landscapes across 25 human brain regions expand the susceptibility gene set for neuropsychiatric disorders [ATAC-Seq]

Project description:Brain region- and cell-specific transcriptome and epigenome molecular features are associated with heritability for neuropsychiatric traits. Here, we provide an atlas of chromatin accessibility and gene expression in neuronal and non-neuronal cells across 25 distinct regions across cortical and subcortical areas of the human brain from 6 neurotypical controls. We identified extensive gene expression and chromatin accessibility differences across brain regions. We further identified variation in alternative promoter-isoform usage and enhancer-promoter interactions across brain regions and found genes with distinct promoter-isoform usage are strongly enriched for neuropsychiatric risk variants. We identified brain region-specific chromatin co-accessibility and gene-coexpression modules that are robustly associated with genetic risk variants for neuropsychiatric disorders. Using an integrative approach, we identify a novel set of genes that is enriched for neuropsychiatric disorders risk variants but is independent of cell-type specific gene expression and annotated pathways. Our results provide a valuable multi-brain region molecular regulation resource and suggest a unique contribution of epigenetic modifications from the subcortical areas to neuropsychiatric disorders.

2022-08-25 | GSE211822 | GEO

Transcriptome and chromatin accessibility landscapes across 25 human brain regions expand the susceptibility gene set for neuropsychiatric disorders [RNA-Seq]

2022-08-25 | GSE211792 | GEO

Integrative single-cell chromatin and transcriptome profiling uncovers cell-type specific regulatory interactions

Project description:Simultaneous measurement of different molecular aspects of gene regulation can help infer functional relationships between genome regulation and gene expression, and understand their distinct and contribution to cell phenotype. Here, we present SHARE-seq, a highly scalable, sensitive, and cost-effective approach for joint measurement of chromatin accessibility and gene expression from the same single cells. Applying SHARE-seq to adult mouse tissues (skin, brain, lung) we show a direct congruence in cell type definition by either chromatin accessibility or RNA expression and create cell-type specific regulatory maps. We leverage naturally occurring cell-cell variation to infer chromatin-expression regulatory relationships and develop a broadly applicable computational strategy to define cis- ad trans- regulatory programs. The cis-regulatory programs, which largely overlap with super-enhancers, are found at key lineage-specifying genes. We demonstrate dynamic chromatin evidence of both gene expression lineage-priming and lineage-memory. The combined scalability and depth of SHARE-seq provide an extensible platform to study the regulatory relationships governing chromatin and gene expression changes across diverse cells within tissues.

2020-10-23 | GSE140203 | GEO

The landscape of accessible chromatin in mammalian pre-implantation embryos

Project description:In mammals, extensive chromatin reorganization is essential for reprogramming terminally committed gametes to a totipotent state during preimplantation development. However, the global chromatin landscape and its dynamics in this period remain unexplored. Here we report a genome-wide map of accessible chromatin in mouse preimplantation embryos using an improved assay for transposase-accessible chromatin with high throughput sequencing (ATAC-seq) approach with CRISPR/Cas9-assisted mitochondrial DNA depletion. We show that despite extensive parental asymmetry in DNA methylomes, the chromatin accessibility between the parental genomes is globally comparable after major zygotic genome activation (ZGA). Accessible chromatin in early embryos is widely shaped by transposable elements and overlaps extensively with putative cis-regulatory sequences. Unexpectedly, accessible chromatin is also found near the transcription end sites of active genes. By integrating the maps of cis-regulatory elements and single-cell transcriptomes, we construct the regulatory network of early development, which helps to identify the key modulators for lineage specification. Finally, we find that the activities of cis-regulatory elements and their associated open chromatin diminished before major ZGA. Surprisingly, we observed many loci showing non-canonical, large open chromatin domains over the entire transcribed units in minor ZGA, supporting the presence of an unusually permissive chromatin state. Together, these data reveal a unique spatiotemporal chromatin configuration that accompanies early mammalian development. Refer to individual Series

2016-06-15 | E-GEOD-66390 | biostudies-arrayexpress

Network effects of the 15q13.3 microdeletion on the transcriptome and epigenome in human induced neurons

Project description:Background: Deletions in the 15q13.3 region are associated with several neuropsychiatric disorders, including autism and schizophrenia. Association studies in humans and functional studies in mice have suggested that several genes within the 15q13.3 microdeletion may play a role in neuronal dysfunction, but the intermediate molecular mechanisms remain unknown. Methods: Induced pluripotent stem cells from 3 patients with the 15q13.3 microdeletion and 3 sex-matched controls were generated and converted into induced neurons. We analyzed the genome-wide effects of the 15q13.3 microdeletion on gene expression, DNA methylation, chromatin accessibility, and sensitivity to cisplatin-induced DNA damage. We also evaluated gene expression changes in induced neurons containing CRISPR knockouts of single 15q13.3 microdeletion genes. Results: In both cell types, gene copy number change within the 15q13.3 microdeletion was accompanied by significantly decreased gene expression and no compensatory changes in DNA methylation or chromatin accessibility, supporting the model that haploinsufficiency of genes within the deleted region drives the disorder. Further, we observed global effects of the microdeletion on the transcriptome and epigenome, with disruptions in several neuropsychiatric disorder-associated pathways, such as Wnt signaling, ribosome biogenesis, DNA binding, and cell adhesion. Conclusions: Our multi-omics analyses of the 15q13.3 microdeletion revealed downstream effects in pathways previously associated with neuropsychiatric disorders. This molecular systems analysis can also be applied to other brain relevant chromosomal aberrations to further our etiological understanding of neuropsychiatric disorders.

2021-03-28 | GSE135131 | GEO

Compendium of functional regulatory variants in human neuropsychiatric disease (HiChIP)

Project description:Abstract: Noncoding variants of presumed regulatory function contribute to neuropsychiatric disease heritability. 4442 noncoding variants connected to risk for 10 neuropsychiatric disorders, including autism spectrum disorder, attention deficit hyperactivity disorder, bipolar disorder, borderline personality disorder, major depression, generalized anxiety disorder, panic disorder, post-traumatic stress disorder, obsessive-compulsive disorder, and schizophrenia, were studied within developing human neural cells. Integrating epigenomic and transcriptomic data with massively parallel reporter assays identified 637 disease-associated single-nucleotide variants (daSNVs) with altered transcription-regulating activity. Expression-gene mapping, network analyses, and chromatin looping identified 619 candidate disease-relevant target genes modulated by these daSNVs. Specific daSNV-associated molecular pathways mapped to prevalent mental health symptoms. These data provide a framework resource to study inherited pathogenic risk for human neuropsychiatric disorders. Purpose: To place disease-associated single nucleotide variants (daSNVs) in genomic context within human neural cells, matched RNA-seq, chromatin accessibility profiling via ATAC-seq, and enhancer-promoter looping via H3K27ac HiChIP was performed in ES cells and at day 2 (N-D2), 10 (N-D10), and 28 (N-D28) of neuronal differentiation. Additionally, anterior (A-NPC) and posterior (P-NPC) neuronal stem cells were generated and studied. Matched sequencing was also performed on primary human astrocytes from adult brains. Processed and raw data for all neural cell types can be found in this repository. Astrocyte raw data can be found at Donohue, et al. "The combinatorial cis-regulatory vocabulary of cell type-specific gene regulation in homeostasis and disease". All biological replicates (n=2) are merged using the ENCODE pipeline.

2022-12-16 | GSE182092 | GEO

Project description:Simultaneously spatiotemporal gene expression and chromatin accessibility for mouse brain development

| PRJNA1081293 | ENA