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Cerebellar Granule Neuron Temporal-NFI Microarray Data

ABSTRACT: Dendrite and synapse development are critical for establishing appropriate neuronal circuits, and disrupted timing of these events can alter connectivity leading to disordered neural function. In early postnatal development of cerebellar granule neurons (CGNs), the expression of many genes is temporally regulated. Further, NFI (Nuclear Factor I) proteins have been shown to play important roles in the regulation of gene expression in developing CGNs. To identify NFI-regulated genome-wide targets involved in late maturation of mouse CGNs, we performed two groups of microarray expression analysis: (1) temporal expression arrays using 1.5 and 6 day cultures of mouse CGNs representing immature and more mature CGNs, respectively, which identified 844 Temporal-Up or Down genes; and (2) NFI-regulated genes in 6 day CGN cultures that were infected at the time of plating with lentiviral vectors expressing either NFI dominant repressor (NFI-EnR) or EnR control protein. This identified 686 NFI-Up (NFI-EnR down-regulated) or NFI-Down (NFI-EnR up-regulated) genes. Overlap analysis identified 212 temporal genes that were regulated by NFI. These results indicated that NFI plays a pivotal role in the regulation of late CGN maturation.

ORGANISM(S): Mus musculus

PROVIDER: GSE42018 | GEO | 2012/11/07

SECONDARY ACCESSION(S): PRJNA179066

REPOSITORIES: GEO

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Cerebellar Granule Neuron Temporal-NFI Microarray Data

Project description:Dendrite and synapse development are critical for establishing appropriate neuronal circuits, and disrupted timing of these events can alter connectivity leading to disordered neural function. In early postnatal development of cerebellar granule neurons (CGNs), the expression of many genes is temporally regulated. Further, NFI (Nuclear Factor I) proteins have been shown to play important roles in the regulation of gene expression in developing CGNs. To identify NFI-regulated genome-wide targets involved in late maturation of mouse CGNs, we performed two groups of microarray expression analysis: (1) temporal expression arrays using 1.5 and 6 day cultures of mouse CGNs representing immature and more mature CGNs, respectively, which identified 844 Temporal-Up or Down genes; and (2) NFI-regulated genes in 6 day CGN cultures that were infected at the time of plating with lentiviral vectors expressing either NFI dominant repressor (NFI-EnR) or EnR control protein. This identified 686 NFI-Up (NFI-EnR down-regulated) or NFI-Down (NFI-EnR up-regulated) genes. Overlap analysis identified 212 temporal genes that were regulated by NFI. These results indicated that NFI plays a pivotal role in the regulation of late CGN maturation. For temporal arrays, mouse CGN progenitors were purified from P6 mouse cerebellum and cultured for either 1.5 or 6 days. Three biological replicates were analyzed for each time point. For NFI arrays, CGN progenitors from P6 mice were transduced upon plating with either NFI-EnR or EnR control lentivirus and cultured 6 days. Four pairs of biological replicates were performed.

2012-11-07 | E-GEOD-42018 | biostudies-arrayexpress

Bidirectional changes in postmitotic H3K27me3 distributions underlie cerebellar granule neuron maturation dynamics

Project description:The functional and transcriptional maturation of neurons is a prolonged process that extends well beyond mitotic exit and terminal fate commitment of progenitors. The differentiation of cerebellar granule neurons (CGNs) in the postnatal mouse cerebellum provides a useful model to identify chromatin mechanisms that orchestrate temporal changes in transcription as postmitotic CGNs mature. Here we report that CGN maturation is associated with dynamic changes in the genomic distribution of histone H3 lysine 27 trimethylation (H3K27me3), a modification best known for its role in repressing alternative fates during cell specification. H3K27me3 is gained rapidly in newly postmitotic CGNs at progenitor-expressed genes that are repressed in neurons. H3K27me3 is lost more gradually at the promoters of a subset of neuronal genes that are transcriptionally induced upon CGN maturation. The loss of H3K27me3 is facilitated by the lysine demethylase KDM6B, and genes that are induced in maturing CGNs show impaired expression in the cerebellum of conditional KDM6B knockout mice. Genes that lose H3K27me3 gain H3K27 acetylation and binding of the pro-maturation ZIC1/2 transcription factors, suggesting that developmental loss of H3K27me3 may be required to permit the onset of transcriptional maturation. Interestingly, pharmacological inhibition of the H3K27 methyltransferase EZH2 in early postmitotic CGNs not only blocked the repression of progenitor genes but also impaired the induction of mature CGN genes. These data show that regulation of H3K27me3 functions in developing postmitotic neurons beyond the period of cell fate commitment to regulate the dynamics of gene expression programs that underlie functional neuronal maturation.

2022-10-11 | GSE212438 | GEO

Bidirectional changes in postmitotic H3K27me3 distributions underlie cerebellar granule neuron maturation dynamics [RNA-seq DIV3]

2023-04-28 | GSE230712 | GEO

Bidirectional changes in postmitotic H3K27me3 distributions underlie cerebellar granule neuron maturation dynamics [RNA-Seq]

2023-04-25 | GSE218685 | GEO

Bidirectional changes in postmitotic H3K27me3 distributions underlie cerebellar granule neuron maturation dynamics

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Bidirectional changes in postmitotic H3K27me3 distributions underlie cerebellar granule neuron maturation dynamics

2022-10-11 | GSE212439 | GEO

Profiling skin from Carrageenan (CGN) rat model for inflammation pain

Project description:This program aims at identifying a skin gene signature associated with inflammation pain in rat CGN model The profiling data was analyzed by identifying genes that were up- and down-regulated at selected p value and fold change in the skin of rats treated with CGN (to induce pain) compared to the corresponding non-treated controls.

2013-03-22 | E-GEOD-38072 | biostudies-arrayexpress

Chromatin accessibility profiling of developing cerebellar granule neurons identifies novel neuronal enhancers and reveals a role for Zic transcription factors in neuronal maturation

Project description:To identify chromatin mechanisms of neuronal differentiation, we characterized the relationship between chromatin accessibility and gene expression in cerebellar granule neurons (CGNs) of the developing mouse. We used DNase-seq to globally map accessibility of cis-regulatory elements and RNA-seq to profile transcript abundance at key points in postnatal neuronal differentiation in vivo and in culture. We observed thousands of chromatin accessibility changes as CGNs differentiated and determined that many of these regions function as stage-specific neuronal enhancers. Motif discovery within differentially accessible chromatin regions suggested a novel role for the Zic family of transcription factors in CGN maturation, and we confirmed the association of Zic with these elements by ChIP-seq. Knockdown of Zic1 and Zic2 indicated Zic transcription factors are required to coordinate mature neuronal gene expression patterns. These data reveal chromatin dynamics at thousands of gene regulatory elements that facilitate gene expression patterns necessary for neuronal differentiation and function. Biological triplicate DNase-seq and RNA-seq samples from 3 in vivo cerebellum developmental stages (P7, P14, P60) and 3 cultured CGN stages (isolated granule neuron precursors, +3DIV, and +7DIV) obtained. Zic1 and Zic2 were separately knocked down by lentiviral shRNA in cultured CGNs followed by RNA-seq (2 biological replicates per KD and 2 controls). Zic1/2 ChIP-seq was performed with in vivo cerebellum at two developmental stages (P7 and P60) in duplicate with matching input and IgG controls.

2015-02-27 | E-GEOD-60731 | biostudies-arrayexpress

Genes significantly down or Up-regulated upon RNF219 knockdown

Project description:Genes significantly down or Up-regulated upon RNF219 knockdown

| PRJNA377128 | ENA

The histone demethylase Kdm6 regulates a mature gene expression program in differentiating cerebellar granule neurons

Project description:The histone H3 lysine 27 (H3K27) demethylase Kdm6b (Jmjd3) can promote cellular differentiation, however its physiological functions in neurons remain to be fully determined. We studied the expression and function of Kdm6b in differentiating granule neurons of the developing postnatal mouse cerebellum. At postnatal day 7, Kdm6b is expressed throughout the layers of the developing cerebellar cortex, but its expression is upregulated in newborn cerebellar granule neurons (CGNs). Atoh1-Cre mediated conditional knockout of Kdm6b in CGN precursors either alone or in combination with Kdm6a did not disturb the gross morphological development of the cerebellum. Furthermore, RNAi-mediated knockdown of Kdm6b in cultured CGN precursors did not alter the induced expression of early neuronal marker genes upon cell cycle exit. By contrast, knockdown of Kdm6b significantly impaired the induction of a mature neuronal gene expression program, which includes gene products required for functional synapse maturation. Loss of Kdm6b also impaired the ability of Brain-Derived Neurotrophic Factor (BDNF) to induce expression of Grin2c and Tiam1 in maturing CGNs. Taken together, these data reveal a previously unknown role for Kdm6b in the postmitotic stages of CGN maturation and suggest that Kdm6b may work, at least in part, by a transcriptional mechanism that promotes gene sensitivity to regulation by BDNF.

2017-11-20 | GSE106120 | GEO

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