Genome wide map of SOX1 occupancy in human embryonic stem cell derived neural progenitors
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE138215 | GEO | 2020/08/26
REPOSITORIES: GEO
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Project description:Region-specific neural progenitor cells (NPCs) can be generated from human embryonic stem cells (hESCs) through modulating signaling pathways. However, how intrinsic transcriptional factors contribute to the neural regionalization are not well characterized. Here, we generate region-specific NPCs from hESCs and find that SOX1 is highly expressed in NPCs with the rostral hindbrain identity. Moreover, we find that OTX2 inhibits SOX1 expression, displaying exclusive expression between the two factors. Furthermore, SOX1 knockout (KO) leads to up-regulation of midbrain genes and down-regulation of rostral hindbrain genes, indicating that SOX1 is necessary for specification of rostral hindbrain NPCs. Our SOX1 ChIP-sequencing analysis reveals that SOX1 binds to the distal region of GBX2 to activate its expression. Overexpression of GBX2 largely abrogates SOX1-KO induced aberrant gene expression. Taken together, this study uncovers previously unappreciated role of SOX1 in early neural regionalization and provides new information for the precise control of the OTX2/GBX2 interface.
2020-08-26 | GSE138218 | GEO
Project description:During human embryogenesis, primitive neural cells start to be generated at the time of gastrulation and gradually acquire regional identities, which is a process called neural patterning. But how intrinsic factors respond to exogenous patterning signals remains poorly understood. Human Embryonic Stem Cells (hESCs) provide a great model to recapitulate this process. Through exogenous manipulation of canonical WNT signaling activation during neural differentiation, dose-dependent specification of regionally defined neural progenitors ranging from the telencephalic forebrain to posterior hindbrain could be rapidly and efficiently induced. Unexpectedly, we find that SOX1, generally referred as a pan-neural gene, displays a regional specific distribution in the human neural patterning process. To investigate the expression and function of SOX1 efficiently, we have generated the SOX1-EGFP reporter and SOX1-knockout (KO) hESC lines using the CRISPR/Cas9 system. SOX1 is initially expressed across the mes–met border and peaked in the metencephalon region at the early regional specification stage. Its depletion leads to the posterior shift of the mes–met border. Therefore, SOX1 is required to define the border at a correct region. In-depth analysis of SOX1 ChIP-sequencing and transcriptome data will provide more insights into how SOX1 determines the mes-met border formation and identify the downstream targets of SOX1. This study identifies SOX1 as one of the intrinsic factors key for the prepattern establishment in the developing central nervous system, particularly for defining the isthmus position.
2020-08-26 | GSE138217 | GEO
Project description:The 5HT system is organized into rostral and caudal populations with discrete anatomical locations and opposite axonal trajectories in the developing hindbrain. 5HT neuron cell bodies in the rostral subdivision migrate to the midbrain and pons and extend ascending projections throughout the forebrain. 5HT cell bodies in the caudal subdivision migrate to the ventral medulla and caudal half of the pons and provide descending projections to the brainstem and spinal cord. Experiment Overall Design: We used microarrays to determine genes expressed by both rostral and caudal 5HT neurons as well as genes that are differentially expressed between rostral and caudal 5HT neurons at E12.5 when axon pathfinding and cell migration are underway. E12.5 neural tubes were isolated from ePet-EYFP embryos and dissected into a rostral domain (mesecephalic flexure to pontine flexure) and a caudal domain (pontine flexure to spinal cord). After cell dissociation (details under growth protocol), cells were subjected to fluorescent activated cell sorting (FACS) to obtain 4 cell populations. R+ = rostral ePetEYFP positive 5HT neurons; R- = YFP negative non-serotonergic cells in the rostral neural tube; C+ = caudal ePetEYFP positive 5HT neurons; C- = YFP negative non-serotonergic cells in the caudal neural tube. 200,000 cells for each of the 4 cell types (R+, R-, C+, C-) were collected for RNA extraction and hybridization to Affymetrix Mouse 430 2.0 arrays.
2010-01-30 | E-GEOD-19474 | biostudies-arrayexpress
Project description:The dentate gyrus of the hippocampus continues generating new neurons throughout life. These nerve cells originate from radial astrocytes within the subgranular zone (SGZ). We find that Sox1, a member of the SoxB1 family of transcription factors, is expressed in a subset of radial astrocytes. Lineage tracing using Sox1 driven reporter mice shows that the Sox1-expressing cells represent an activated neural stem/progenitor population. We used microarrays to evaluate the molecular constitution of neural stem cells with aging.
2012-08-09 | GSE39992 | GEO
Project description:To investigate the mechanism by which SOX1-OT V1 regulates neural differentiation, The sample from d0, d4, d10, d16D (dorsal) and d16V (ventral) of neural differentiation were collected to perform RNA-seq assays to quantitate gene expression in control group and SOX1-OT V1-PAKI group.
2021-10-26 | GSE186233 | GEO
Project description:Embryonic stem cells were differentiated into Sox1 positive neural stem cells. Nap1l2 deleted neural stem cells were compared to nondeleted neural stem cells.
2007-12-31 | E-MEXP-1002 | biostudies-arrayexpress
Project description:<p>During development of the human brain, multiple cell types with diverse regional identities are generated. Here we report a system to generate early human brain forebrain and mid/hindbrain cell types from human embryonic stem cells (hESCs), and infer and experimentally confirm a lineage tree for the generation of these types based on single-cell RNA-Seq analysis. We engineered <i>SOX2<sup>Cit/+</sup></i> and <i>DCX<sup>Cit/Y</sup></i> hESC lines to target progenitors and neurons throughout neural differentiation for single-cell transcriptomic profiling, then identified discrete cell types consisting of both rostral (cortical) and caudal (mid/hindbrain) identities. Direct comparison of the cell types were made to primary tissues using gene expression atlases and fetal human brain single-cell gene expression data, and this established that the cell types resembled early human brain cell types, including preplate cells. From the single-cell transcriptomic data a Bayesian algorithm generated a unified lineage tree, and predicted novel regulatory transcription factors. The lineage tree highlighted a prominent bifurcation between cortical and mid/hindbrain cell types, confirmed by clonal analysis experiments. We demonstrated that cell types from either branch could preferentially be generated by manipulation of the canonical Wnt/beta-catenin pathway. In summary, we present an experimentally validated lineage tree that encompasses multiple brain regions, and our work sheds light on the molecular regulation of region-specific neural lineages during human brain development.</p>
| phs001205 | dbGaP
Project description:The dentate gyrus of the hippocampus continues generating new neurons throughout life. These nerve cells originate from radial astrocytes within the subgranular zone (SGZ). We find that Sox1, a member of the SoxB1 family of transcription factors, is expressed in a subset of radial astrocytes. Lineage tracing using Sox1 driven reporter mice shows that the Sox1-expressing cells represent an activated neural stem/progenitor population. We used microarrays to evaluate the molecular constitution of neural stem cells with aging. Hippocampi were isolated from Sox1-GFP mice at 5-7 months (n=3) or 1 year 9 months (n=4) using a Leica dissecting scope. Cells were immediately dissociated using papain (Worthington Biochemical Corporation. Lakewood, NJ, USA) and sorted for the GFP high or GFP negative population using a FACSAria Flow Cytometer (BD Biosciences, San Diego, CA, USA). RNA was harvested using the Arcturus PicoPure RNA isolation kit (Life Technologies Corp, Carlsbad, CA, USA) and the quality and quantity of each sample was checked using Agilent BioAnalyzer (Santa Clara, CA, USA) and Nanodrop spectrophotometer (Wilmington, DE, USA). Samples were amplified using the NuGEN FFPE kit (San Carlos, CA, USA) and cDNA was prepared using an oligo(dT)-T7 RNA polymerase primer before biotinylation by in vitro transcription, partial hydrolysis and final hybridization to the Affymetrix (Santa Clara, CA, USA) GeneChip Mouse Gene 1.0 ST Array (Gladstone Genomics Core). Arrays were normalized using Robust Multichip Average (RMA) and the latest probe map to MM9 RefSeq genes (Irizarry et al., 2003; Dai et al., 2005). To detect potential outlier arrays, the distributions of fold changes between all possible pairs within each group were analyzed. One sample from a young mouse was found to have a skewed distribution when compared to other biological replicate samples and was removed from further analysis. The statistical package R was used to perform average linkage hierarchical clustering of the remaining samples. Significance Analysis of Microarrays (SAM) was performed to determine significant differentially expressed genes between the old and young mice with a False Discovery Rate cutoff of 5% (Tusher et al., 2001).
2012-08-08 | E-GEOD-39992 | biostudies-arrayexpress
Project description:We analyzed scRNA-seq data in human pluripotent stem cells derived neural tube models. This in vitro system recapitulates some key aspects of neural patterning in the entire neural tube, including both brain and SC regions, along both rostral-caudal and dorsal-ventral axes
2022-01-28 | GSE194225 | GEO
Project description:Ventral midbrain (VM) dopaminergic progenitor cells derived from human pluripotent stem cells have the potential to replace endogenously lost dopamine neurons and are currently in preclinical and clinical development for treatment of Parkinson’s Disease (PD). However, one main challenge in the quality control of the cells is that rostral and caudal VM progenitors are extremely similar transcriptionally though only the caudal VM cells give rise to dopaminergic neurons with functionality in PD. Therefore, it is critical to develop assays which can rapidly and reliably discriminate rostral from caudal VM cells during clinical manufacturing. Here, we applied shotgun proteomics to search for novel secreted biomarkers specific for caudal VM progenitors compared to rostral VM progenitors and validated key hits by ELISA. From this, we identified novel secreted markers (CPE, LGI1 and PDGFC) significantly enriched in caudal versus rostral VM progenitor cultures, whereas the markers CNTN2 and CORIN were significantly enriched in rostral VM cultures. With this data, we suggest and test in clinical grade samples a panel of coupled ELISA assays that can be applied as a quality control tool for assessing the correct patterning of cells during clinical manufacturing.
2023-12-13 | PXD039510 | Pride