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SOX1 Determines the Regional Identity of Neural Progenitors Differentiated from Human Embryonic Stem Cells

ABSTRACT: SOX1 Determines the Regional Identity of Neural Progenitors Differentiated from Human Embryonic Stem Cells

PROVIDER: PRJNA575045 | ENA |

REPOSITORIES: ENA

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SOX1 Determines the Regional Identity of Neural Progenitors Differentiated from Human Embryonic Stem Cells

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

Genome wide map of SOX1 occupancy in human embryonic stem cell derived neural progenitors

Project description:To understand how SOX1's binding profile in neural progenitor with different regional identities, we differentiated hESC into neural progenitors with rostral and caudal identies throught modulating Wnt signaling pathway. We collected cells at neural differentiation day 4 and 8, and performed SOX1 ChIP-seq to investigate SOX1's genome wide binding profiles. These results provide important information for the mechanism underlying SOX1's functions in early regionalization.

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Regional identity of human neural stem cells determinesoncogenic responses to histone 1H3.3 mutants

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Regional identity of human neural stem cells determines oncogenic responses to histone H3.3 mutants

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Regional identity of human neural stem cells determines oncogenic responses to histone H3.3 mutants [ChIP-Seq]

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Transcription profiling of mouse embryonic stem cells differentiated into Sox1 positive neural stem cells. Nap1l2 deleted neural stem cells were compared to nondeleted neural stem cells

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

Tbr1 regulates regional and laminar identity of postmitotic neurons in developing neocortex

Project description:Areas and layers of the cerebral cortex are specified by genetic programs that are initiated in progenitor cells and then, implemented in postmitotic neurons. Here, we report that Tbr1, a transcription factor expressed in postmitotic projection neurons, exerts positive and negative control over both regional (areal) and laminar identity. Tbr1 null mice exhibited profound defects of frontal cortex and layer 6 differentiation, as indicated by down-regulation of gene-expression markers such as Bcl6 and Cdh9. Conversely, genes that implement caudal cortex and layer 5 identity, such as Bhlhb5 and Fezf2, were up-regulated in Tbr1 mutants. Tbr1 implements frontal identity in part by direct promoter binding and activation of Auts2, a frontal cortex gene implicated in autism. Tbr1 regulates laminar identity in part by downstream activation or maintenance of Sox5, an important transcription factor controlling neuronal migration and corticofugal axon projections. Similar to Sox5 mutants, Tbr1 mutants exhibit ectopic axon projections to the hypothalamus and cerebral peduncle. Together, our findings show that Tbr1 coordinately regulates regional and laminar identity of postmitotic cortical neurons. Mouse E14.5 neocortices and Postnatal day (P) 0.5 brains: E14.5 neocortices KO, 3; E14.5 neocortices WT, 3; Postnatal day (P) 0.5 brains frontal WT, 4; Postnatal day (P) 0.5 brains frontal KO, 4; Postnatal day (P) 0.5 brains parietal WT, 4; Postnatal day (P) 0.5 brains parietal KO, 4; Postnatal day (P) 0.5 brains occipital WT, 4; Postnatal day (P) 0.5 brains occipital KO, 4.

2010-07-27 | E-GEOD-22371 | biostudies-arrayexpress

SOX1 is required for the specification of rostral hindbrain neural progenitor cells from human embryonic stem cells

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

Tbr1 regulates regional and laminar identity of postmitotic neurons in developing neocortex

2010-07-27 | GSE22371 | GEO

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