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Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2 [Spatial Transcriptomics]

ABSTRACT: Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2 [Spatial Transcriptomics]

PROVIDER: PRJNA1120899 | ENA |

REPOSITORIES: ENA

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Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2 [Spatial Transcriptomics]

Project description:During development, the meninges act as a regulator of neocortical development by secreting ligands that act on neural cells to regulate neurogenesis and neuronal migration. Meninges-derived retinoic acid (RA) promotes neocortical progenitor cell cycle exit however the underlying mechanism is unknown. Here, we use Foxc1-mutant embryos that lack meninges-derived ligands, spatial transcriptomics, and profiling of retinoic-acid receptor-a (RARa) DNA binding to identify the neurogenic transcriptional mechanisms of RA signaling in cortical neural progenitors. We determined that meningeal-derived RA controls neurogenesis by suppressing self-renewal pathways Notch signaling and the transcription factor Sox2. We show that RARα binds in the Sox2ot promoter, a long non-coding RNA that regulates Sox2 expression, and RA promotes Sox2ot expression in neocortical progenitors. Our findings elucidate a previously unknown mechanism of howmeningeal RA coordinates neocortical development and insight into how defects in meningeal develop can cause neurodevelopmental disorders.

2024-09-25 | GSE269283 | GEO

Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2 [CUT&Run]

2024-09-25 | GSE269282 | GEO

Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2

Project description:Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2

| PRJNA1120892 | ENA

Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2 [CUT&Run]

Project description:Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2 [CUT&Run]

| PRJNA1120897 | ENA

Meningeal cells contribute to postnatal cortical neurogenesis.

Project description:Postnatal brain neurogenesis in mammals is believed to be restricted to rare germinative remnants of the neuroepithelium. In this study, we discovered that, in the postnatal brain, a subset of embryonically derived progenitors is present in meningeal substructures. These cells migrate from the meningeal substructures to the retrosplenial and visual motor cortex and differentiate into (electrically) functional integrated neurons. Lineage tracing analysis revealed that this subset of neural progenitors originate largely from PDGFR+ cells. PDGFR-derived cells differentiate mostly into Satb2+ neurons in cortical layers I-IV. Thus, a reservoir of embryonically derived progenitors in the meninges contributes to postnatal cerebral cortical neurogenesis.

2016-11-23 | E-MTAB-4951 | biostudies-arrayexpress

Meningeal-derived retinoic acid regulates neurogenesis via suppression of Notch and Sox2

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-09-27 | GSE269284 | GEO

Meningeal cells contribute to postnatal cortical neurogenesis.

Project description:Meningeal cells contribute to postnatal cortical neurogenesis.

| PRJEB14890 | ENA

Ligand-dependent dynamics of retinoic acid receptor binding during early neurogenesis

Project description:Among its many roles in development, retinoic acid determines the anterior-posterior identity of differentiating motor neurons by activating Retinoic Acid Receptor (RAR)-mediated transcription. RAR is thought to bind the genome constitutively, and only induce transcription in the presence of the retinoid ligand. However, little is known about where RAR binds to the genome or how it selects target sites. We tested the constitutive RAR binding model using the retinoic acid-driven differentiation of mouse embryonic stem cells into differentiated motor neurons. We find that retinoic acid treatment results in widespread changes in RAR genomic binding, including novel binding to genes directly responsible for anterior-posterior specification, as well as the subsequent recruitment of the basal polymerase machinery. Finally, we discovered that the binding of transcription factors at the embryonic stem cell stage can accurately predict where in the genome RAR binds after initial differentiation. We have characterized a ligand-dependent shift in RAR genomic occupancy at the initiation of neurogenesis. Our data also suggests that enhancers active in pluripotent embryonic stem cells may be preselecting regions that will be activated by RAR during neuronal differentiation. The differentiation of ventral motor neurons is induced by treating embryonic stem cell cultures with retinoic acid. Here, ChIP-seq is used to profile the genome-wide occupancy of RAR isofroms both immediately prior to and during exposure of the cells to retinoic acid. ChIP-seq is also used to profile the genomic occupancy of Pol2 with phosphorylated serine 5 (Pol2-S5P) and phosphorylated serine 2 (Pol2-S2P) after exposure to retinoic acid.

2010-12-10 | E-GEOD-19409 | biostudies-arrayexpress

Hominin-specific NOTCH2NL genes affect Notch signaling and cortical neurogenesis

Project description:Hominin-specific NOTCH2NL genes affect Notch signaling and cortical neurogenesis

| PRJNA435875 | ENA

Ogt Controls Adult Neurogenesis through Modulating Notch Signaling Activity in Mice

Project description:Ogt catalyzed O-linked N-acetylglucosamine (O-GlcNAcylation, O-GlcNAc) plays an important function in diverse biological processes and diseases. However, the roles of Ogt in regulating neurogenesis remain largely unknown. Here, we show that Ogt deficiency or depletion in adult neural stem cells (aNSCs) leads to the diminishment of aNSCs pool and the aberrant neurogenesis, and consequently impairs cognitive function of adult mice. RNA sequencing reveals that Ogt deficiency alters the transcription of genes relating to cell cycle, neurogenesis, and neuronal development. Mechanistic studies show that Ogt directly interacts with Notch1 and catalyzes the O-GlcNAc modification of Notch TM/ICD fragment. The decreased O-GlcNAc modification of TM/ICD increases the binding of E3 ubiquitin ligase Itch to TM/ICD and promotes its degradation. Itch knockdown rescues neurogenic defects in Ogt-deficient mice. OGT also regulates human cortical neurogenesis in forebrain organoids derived from induced pluripotent stem cells. Our findings reveal the essential roles and mechanisms of Ogt and O-GlcNAc modification in regulating mammalian neurogenesis and cognition.

2020-12-15 | GSE163141 | GEO

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