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Gene expression analysis of Kc cells from Drosophila melanogaster during ecdysone treatment and CP190 knockdown

ABSTRACT: This study examines the changes in genes expression that occur in Drosophila melanogaster during the ecdysone response as well as during RNAi knockdown of the insulator protein, CP190. Analysis was performed in Kc cells after 0, 3, and 48 hours of ecdysone treatment in the presence of either control or CP190 knockdown.

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE30686 | GEO | 2011/10/14

SECONDARY ACCESSION(S): PRJNA154697

REPOSITORIES: GEO

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Kc cells from Drosophila melanogaster during ecdysone treatment and CP190 knockdown

Project description:This SuperSeries is composed of the following subset Series: GSE30686: Gene expression analysis of Kc cells from Drosophila melanogaster during ecdysone treatment and CP190 knockdown GSE30740: Distribution of Drosophila insulator proteins after ecdysone treatment in Kc cells Refer to individual Series

2011-10-13 | E-GEOD-30741 | biostudies-arrayexpress

Gene expression analysis of Kc cells from Drosophila melanogaster during ecdysone treatment and CP190 knockdown

Project description:This study examines the changes in genes expression that occur in Drosophila melanogaster during the ecdysone response as well as during RNAi knockdown of the insulator protein, CP190. Analysis was performed in Kc cells after 0, 3, and 48 hours of ecdysone treatment in the presence of either control or CP190 knockdown. Six conditions were analyzed, and each condition was performed for 2 biological replicates making a total of 12 chips. Each chip measures the expression level of 16,637 genes from D.melanogaster with eight, 60-mer probes per gene.

2011-10-13 | E-GEOD-30686 | biostudies-arrayexpress

Distribution of Drosophila insulator proteins after ecdysone treatment in Kc cells

Project description:Here we examine changes in the distribution of Drosophila insulator proteins during the ecdysone response. We performed ChIP-seq analysis in Kc cells at 0, 3, and 48 hours of ecdysone treatment with antibodies against CP190, Su(Hw), dCTCF, and BEAF-32B.

2011-10-14 | GSE30740 | GEO

Distribution of Drosophila insulator proteins after ecdysone treatment in Kc cells

2011-10-13 | E-GEOD-30740 | biostudies-arrayexpress

Genome-wide binding profiles of Drosophila melanogaster insulator proteins in Kc and Mbn2 cells

Project description:ChIP-chip experiments with NimbleGen whole-genome tiling arrays to compare Su(Hw), dCTCF, BEAF, and CP190 localization on DNA in Kc and Mbn2 cells revealed that BEAF is a third subclass of CP190-containing insulators. The DNA binding proteins, Su(Hw), dCTCF, and BEAF show unique distribution patterns with respect to the location and expression level of genes, suggesting diverse roles for these three subclasses of insulators in genome organization. Notably, cell line specific localization sites for all three DNA binding proteins as well as CP190 indicate multiple levels at which insulators can be regulated to affect gene expression. Three replicates of Su(Hw), dCTCF, and CP190 ChIP-chip experiments in both Kc and Mbn2 cells as well as two replicates of BEAF ChIP-chip experiments in both Kc and Mbn2 cells were compared.

2010-05-19 | E-GEOD-15661 | biostudies-arrayexpress

M1BP cooperates with CP190 to activate transcription at TAD borders and promote chromatin insulator activity

Project description:Genome organization is driven by forces affecting transcriptional state, but the relationship between transcription and genome architecture remains unclear. Here, we identified the Drosophila transcription factor Motif 1 Binding Protein (M1BP) in physical association with the gypsy chromatin insulator core complex, including the universal insulator protein CP190. M1BP is required for enhancer-blocking and barrier activities of the gypsy insulator as well as its proper nuclear localization. Genome-wide, M1BP specifically colocalizes with CP190 at Motif 1-containing promoters, which are enriched at topologically associating domain (TAD) borders. M1BP facilitates CP190 chromatin binding at many shared sites and vice versa. Both factors promote Motif 1-dependent gene expression and transcription near TAD borders genome-wide. Finally, loss of M1BP reduces chromatin accessibility and increases both inter- and intra-TAD local genome compaction. Our results reveal physical and functional interaction between CP190 and M1BP to activate transcription at TAD borders and mediate chromatin insulator-dependent genome organization.

2021-06-07 | PXD026497 | Pride

Insulator protein binding profiles and gene expression analysis of Drosophila melanogaster Kc and Mbn2 cell lines

Project description:This SuperSeries is composed of the following subset Series: GSE15660: Gene Expression analysis of Kc and Mbn2 cell lines from Drosophila melanogaster. GSE15661: Genome-wide binding profiles of Drosophila melanogaster insulator proteins in Kc and Mbn2 cells (Set1) GSE15662: Genome-wide binding profiles of Drosophila melanogaster insulator proteins in Kc and Mbn2 cells (Set2) GSE15663: Genome-wide binding profiles of Drosophila melanogaster insulator proteins in Kc and Mbn2 cells (Set3) Refer to individual Series

2010-05-19 | E-GEOD-15664 | biostudies-arrayexpress

Drosophila melanogaster

Project description:Gene expression analysis of Kc cells from Drosophila melanogaster during ecdysone treatment and CP190 knockdown

| PRJNA154697 | ENA

Genome-wide binding profiles of Drosophila melanogaster insulator proteins in Kc and Mbn2 cells

2009-05-15 | GSE15661 | GEO

Drosophila Ecdysone Receptor Study

Project description:We used the DamID method to systematically identify the binding sites of Ecdysone Receptor and its heterodimeric partner USP across the whole genome in Drosophila Kc cells. We find that the EcR sites are a subset of the USP sites and that only a proportion are ecdysone regulated from an accompanying ecdysone profiling study. The role of EcR/USP in the ecdysone network appears to be coordinated by the recruitment of many transcription factors as well as signaling molecules. Keywords: DamID, chromatin profiling, DNA microarray

2008-05-01 | GSE9156 | GEO

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