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Identification of genes involved in GABAergic Wiring

ABSTRACT: Identification of genes involved in GABAergic Wiring

PROVIDER: PRJNA476571 | ENA |

REPOSITORIES: ENA

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Identification of genes involved in GABAergic Wiring

Project description:How neurons are wired to form precise circuits is crucial to understand the development of cortical functions. Glutamatergic pyramidal cell and GABAergic interneuron wire up the cortex through differentiated cellular events. However, little is known about the molecular mechanisms that underlie the unique features of interneuron wiring. We performed a high-throughput genomic screen for genes upregulated specifically during GABAergic wiring.

2018-07-31 | GSE115948 | GEO

Combinatorial transcription factor binding encodes cis-regulatory wiring of forebrain GABAergic neurogenesis

Project description:Combinatorial transcription factor binding encodes cis-regulatory wiring of forebrain GABAergic neurogenesis

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Combinatorial transcription factor binding encodes cis-regulatory wiring of forebrain GABAergic neurogenesis

Project description:Transcription factors (TFs) bind combinatorially to genomic cis-regulatory elements (cREs), orchestrating transcription programs. While studies of chromatin state and chromosomal interactions have revealed dynamic neurodevelopmental cRE landscapes, parallel understanding of the underlying TF binding lags. To elucidate the combinatorial TF-cRE interactions driving mouse basal ganglia development, we integrated ChIP-seq for twelve TFs, H3K4me3-associated enhancer-promoter interactions, chromatin and transcriptional state, and transgenic enhancer assays. We identified TF-cREs modules with distinct chromatin features and enhancer activity that have complementary roles driving GABAergic neurogenesis and suppressing other developmental fates. While the majority of distal cREs were bound by one or two TFs, a small proportion were extensively bound, and these enhancers also exhibited exceptional evolutionary conservation, motif density, and complex chromosomal interactions. Our results provide new insights into how modules of combinatorial TF-cRE interactions activate and repress developmental expression programs and demonstrate the value of TF binding data in modeling gene regulatory wiring.

2023-09-11 | GSE222183 | GEO

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Expression profiling in cortical GABAergic neurons at neonate

Project description:During embryonic development, GABAergic interneurons, a main inhibitory component in the cerebral cortex, migrate tangentially from the ganglionic eminence (GE) to cerebral cortex. After reaching the cerebral cortex, they start to extend their neurites for constructing local neuronal circuits around the neonatal stage. Aberrations in migration or neurite outgrowth are implicated in neurological and psychiatric disorders such as epilepsy, schizophrenia and autism. Previous studies revealed that in the early phase of cortical development the neural population migrates tangentially from the GE in the telencephalon and several genes have been characterized as regulators of migration and specification of GABAergic interneurons. However, much less is known about the molecular mechanisms of GABAergic interneurons-specific maturation at later stages of development. Here, we performed genome-wide screening to identify genes related to the later stage by flow cytometry based-microarray (FACS-array) and identified 247 genes expressed in cortical GABAergic interneurons. Among them, Dgkg, a member of diacylglycerol kinase family, was further analyzed. Correlational analysis revealed that Dgkg is dominantly expressed in somatostatin (SST)-expressing GABAergic interneurons. The functional study of Dgkg using GE neurons indicated alteration in neurite outgrowth of GABAergic neurons. This study shows a new functional role for Dgkg in GABAergic interneurons as well as the identification of other candidate genes for their maturation.

2017-12-01 | GSE93295 | GEO

Genome-wide identification of SNAC1-targeted genes involved in drought response in rice

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Identification of five cytotoxicity-related genes involved in the progression of breast cancer

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Nr4a1 regulates cell-specific transcriptional programs in inhibitory GABAergic interneurons

Project description:The patterns of synaptic connectivity and physiological properties of diverse neuron types are shaped by distinct gene sets. Our study demonstrates that, in the mouse forebrain, the transcriptional profiles of inhibitory GABAergic interneurons are regulated by Nr4a1, an orphan nuclear receptor whose expression is transiently induced by sensory experiences and is required for normal learning. Nr4a1 exerts contrasting effects on the local axonal wiring of Parvalbumin- and Somatostatin-positive interneurons, which innervate different subcellular domains of their postsynaptic partners. The loss of Nr4a1 activity in these interneurons results in bidirectional, cell-type-specific transcriptional switches across multiple gene families, including those involved in surface adhesion and repulsion. Our findings reveal that combinatorial synaptic organizing codes are surprisingly flexible and highlight a mechanism by which inducible transcription factors can influence neural circuit structure and function.

2024-06-05 | GSE263082 | GEO

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