Genome-wide association of Geminin and Zic1 during neuroectodermal cell specification
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ABSTRACT:
PROVIDER: PRJNA322060 | ENA |
REPOSITORIES: ENA
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Project description:Cell intrinsic factors that control neuroectoderm specification of early embryonic cells include the nucleoprotein Geminin (Gmnn) and the Zic family of zinc finger transcription factors. Gmnn modulates chromatin state to activate neural gene expression during neural cell fate acquisition, while Gmnn deficiency in the forming neural plate disrupts transcriptional programs that control neural cell specification, neural plate patterning and neurogenesis, resulting in neural tube defects. Likewise, Zic1 over-expression promotes neural gene expression, while heterozygous deletion of Zic1/4 leads to Dandy-Walker malformation, the most common congenital cerebellar malformation. During embryonic development, Geminin and Zic1 expression is enriched in neuroectoderm from gastrula stages, with broad expression in the forming CNS during post-gastrula stages, when neural tube closure and neurogenesis are initiated. To gain a greater understanding of the molecular events that regulate neural cell specification, here we used ChIP-seq to define genome-wide chromatin binding profiles for Gmnn in embryonic stem cells (ESCs) and for Gmnn and Zic1 during specification of ESCs into neuroectoderm.
2016-12-01 | GSE77246 | GEO
Project description:The nucleoprotein Geminin (Gmnn) promotes neural cell fate acquisition of embryonic stem cells, while knockdown reduces the efficiency of neural gene activation. This occurs, at least in part, through Geminin’s ability to promote histone hyperacetylation at neural genes, to activate their expression. In mouse models in vivo, Geminin deficiency in the embryonic neural tube between embryonic days 8.5-10.5 also reduces the expression of genes controlling neural specification and/or differentiation, contributing to neural tube defects. To determine where Geminin binding and Gmnn-dependent acetylation occurs throughout the genome, we performed ChIP-chip analysis (these data) and ChIP-seq analysis (GSE77246) to define Geminin-bound chromatin locations in mouse embryonic stem cells (ESCs) and in ESC-derived neuroectoderm. We also performed ChIP-chip analysis of H3K9 acetylation in ESC-derived neuroectoderm, with or without Doxycycline-dependent Gmnn knockdown, to define the requirements for Geminin activity for histone acetylation of promoters during neural fate specification.
2016-12-01 | GSE81450 | GEO
Project description:This SuperSeries is composed of the SubSeries listed below.
2016-12-01 | GSE81595 | GEO
Project description:Genome-wide chromatin binding profiles for Zic1 and Geminin during neuroectodermal cell specification
| PRJNA309845 | ENA
Project description:Geminin promoter occupancy and Geminin-dependent histone acetylation during neuroectodermal cell specification
| PRJNA321631 | ENA
Project description:MKN28 cell lines were transfected with pCDNA3.1-ZIC1 or pCDNA3.1 empty vector. Then, an Agilent oligonucleotide microarray was conducted to systematically determine downstream targets of ZIC1.
2012-06-26 | GSE38924 | GEO
Project description:MKN28 cell lines were transfected with pCDNA3.1-ZIC1 or pCDNA3.1 empty vector. Then, an Agilent oligonucleotide microarray was conducted to systematically determine downstream targets of ZIC1. Two samples are analyzed with one two channnel experiment.
2012-06-25 | E-GEOD-38924 | biostudies-arrayexpress
Project description:The response of ectodermal explants, neuralized by noggin and treated with cycloheximide, following activation of hormone-inducible zic1 injected into the parent embryos compared to those from beta globin injected embryos as controls, is expected to provide information on the direct targets of the Zic1 transcription factor. Experiment Overall Design: Activation of zic1 in ectodermal explants following inhibition of new protein synthesis allowed the direct targets of zic1 to be identified by comparison with controls. After RNA extraction, purification and checks with PCR with actin primers for any mesoderm contamination samples were prepared for hybridization to Xenopus laevis Affymetrix GeneChip arrays.
2009-07-10 | E-GEOD-12128 | biostudies-arrayexpress
Project description:The transcription factors Pax3 and Zic1 are among the earliest genes activated at the neural plate border. Pax3 and Zic1 in combination promote neural crest fate, while Zic1 alone regulate cranial placode progenitor formation. We used microarrays to identify the global repertoire of genes activated by these facors individually or in combination to gain insights into the molecular mechanisms underlying cell fate decision at the neural plate border.
2015-05-06 | GSE68546 | GEO
Project description:The transcription factors Pax3 and Zic1 are among the earliest genes activated at the neural plate border. Pax3 and Zic1 in combination promote neural crest fate, while Zic1 alone regulate cranial placode progenitor formation. We used microarrays to identify the global repertoire of genes activated by these facors individually or in combination to gain insights into the molecular mechanisms underlying cell fate decision at the neural plate border. Xenopus laevis embryos were injected at the 2-cell stage with mRNA encoding Pax3GR and Zic1GR , the hormone-inducible version of Pax3 and Zic1, alone or in combination. At the blastula stage (stage 9), animal cap explants were dissected and cultured for 8 hours in the presence of dexamethasone. A glucocorticoid receptor (GR) mRNA was also injected as negative control.
2015-05-06 | E-GEOD-68546 | biostudies-arrayexpress