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Chromatin Remodeling Enzyme Smarca5/Snf2h Regulates Cell Cycle Exit, Differentiation of the Lens Epithelium, and Denucleation of Lens Fiber Cells

ABSTRACT: Genome-wide approach to identify the cell-autonomous role of Snf2h in lens fiber cell terminal differentiation. Differential gene expression was analyzed in Snf2h lens-conditional knockout and wildtype newborn mouse eyeballs, with subsequent comparison of this data with the Brg1 lens-conditional knockout mouse eyes expression data (GSE25168).

ORGANISM(S): Mus musculus

PROVIDER: GSE41608 | GEO | 2012/10/18

SECONDARY ACCESSION(S): PRJNA177842

REPOSITORIES: GEO

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Chromatin Remodeling Enzyme Smarca5/Snf2h Regulates Cell Cycle Exit, Differentiation of the Lens Epithelium, and Denucleation of Lens Fiber Cells

Project description:Genome-wide approach to identify the cell-autonomous role of Snf2h in lens fiber cell terminal differentiation. Differential gene expression was analyzed in Snf2h lens-conditional knockout and wildtype newborn mouse eyeballs, with subsequent comparison of this data with the Brg1 lens-conditional knockout mouse eyes expression data (GSE25168). Four biological replicate experiments were performed.

2012-10-18 | E-GEOD-41608 | biostudies-arrayexpress

Chromatin remodeling enzyme Brg1 is required for mouse lens fiber cell terminal differentiation and their denucleation [eyeball tissue]

Project description:Genome-wide approach to identify the cell-autonomous role of Brg1 in lens fiber cell terminal differentiation. Differential gene expression was analyzed in Brg1 lens-conditional knockout and wildtype newborn mouse eyeballs, with subsequent comparison of this data with the dnBrg1 mouse lenses expression data. Keywords: Differential gene expression Three biological replicate experiments were performed.

2011-01-01 | E-GEOD-25168 | biostudies-arrayexpress

Chromatin remodeling enzyme Brg1 is required for mouse lens fiber cell terminal differentiation and their denucleation [eyeball tissue]

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Gata3 directly regulates cell cycle exit-coupled lens fiber cell differentiation in mouse embryonic lens

Project description:Gata3 is a DNA-binding transcription factor involved in cellular differentiation in a variety of tissues. To investigate the role of Gata3 in lens development we conducted lens-specific conditional loss-of-function model of Gata3 and confirmed abnormal regulation of cell cycle exit-coupled lens differentiation and retention of nuclei in the mutated lens fibers. We analyzed transcriptomes between control and mutated lenses by RNA-seq and revealed dysregulation of genes encoding critical components of the lens differentiation cascade, including a subset of crystallin genes, down-regulation of Dnase2b and reduced expression of Cdkn1b/p27 and Cdkn1c/p57.

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Chromatin remodeling enzyme Brg1 is required for mouse lens fiber cell terminal differentiation and their denucleation [lens tissue]

Project description:Genome-wide approach to identify the cell-autonomous role of Brg1 in lens fiber cell terminal differentiation. To examine roles of Brg1 in mouse lens development, a dnBrg1 transgenic construct was expressed using the lens-specific alphaA-crystallin promoter in postmitotic lens fiber cells. Morphological studies revealed abnormal lens fiber cell differentiation in transgenic lenses resulting in cataract. Electron microscopic studies showed abnormal lens suture formation and incomplete karyolysis (denucleation) of lens fiber cells. To identify genes regulated by Brg1, RNA expression profiling was performed in E15.5 embryonic wild type and dnBrg1 transgenic lenses. In addition, comparisons between differentially expressed genes in dnBrg1 transgenic, Pax6 heterozygous, and Hsf4 homozygous lenses identified multiple genes co-regulated by Brg1, Hsf4 and Pax6. Among them DNase IIbeta, a key enzyme required for lens fiber cell denucleation, was found downregulated in each of the Pax6, Brg1 and Hsf4 model systems. Lens-specific deletion of Brg1 using conditional gene targeting demonstrated that Brg1 was required for lens fiber cell differentiation and indirectly for retinal development but was not essential for lens lineage formation. Wild type and dnBrg1 transgenic lenses, 4 biological replicates each

2011-01-01 | E-GEOD-22322 | biostudies-arrayexpress

Chromatin remodeling enzyme Brg1 is required for mouse lens fiber cell terminal differentiation and their denucleation [lens tissue]

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Lens Epithelial Cells and Lens Cortical Fiber Cells

Project description:Total RNA was isolated from three separate populations of human lens epithelial cells and three matching populations of lens cortical fiber cells. All samples were analyzed on separate microarrays. Keywords: repeat sample

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