RNA expression in Drosophila melanogaster mutants lacking HP1a
Ontology highlight
ABSTRACT:
ORGANISM(S): Drosophila melanogaster
PROVIDER: GSE39083 | GEO | 2012/09/01
SECONDARY ACCESSION(S): PRJNA169927
REPOSITORIES: GEO
Similar Datasets
Project description:mRNA expression levels were determined by NGS for wildtype larvae as well as for larvae lacking HP1a [Su(var)205^04/Su(var)205^05 transheterozygotes]. RNA samples from wildtype (OR) and HP1a mutant third instar larvae were examined, using duplicate biological samples and Illumina NGS.
2012-09-01 | E-GEOD-39083 | biostudies-arrayexpress
Project description:modENCODE_submission_4203 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of 125 chromosomal proteins across the Drosophila melanogaster genome. The proteins under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 4; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody HP1 wa191 (target is HP1a); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44529 | biostudies-arrayexpress
Project description:modENCODE_submission_3759 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of the major histone modifications across the Drosophila melanogaster genome. The modifications under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 6; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody H3K36me3 abcam (target is H3K36me3); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44483 | biostudies-arrayexpress
Project description:modENCODE_submission_3775 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of the major histone modifications across the Drosophila melanogaster genome. The modifications under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 6; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody H3K9me3 abcam (target is H3K9me3); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44490 | biostudies-arrayexpress
Project description:modENCODE_submission_3701 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of 125 chromosomal proteins across the Drosophila melanogaster genome. The proteins under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 4; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody HP1c (MO 462) (target is HP1c); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44475 | biostudies-arrayexpress
Project description:modENCODE_submission_3896 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of 125 chromosomal proteins across the Drosophila melanogaster genome. The proteins under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 4; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody POF (MO 459) (target is POF); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44506 | biostudies-arrayexpress
Project description:modENCODE_submission_3798 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of 125 chromosomal proteins across the Drosophila melanogaster genome. The proteins under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 6; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody RNA Pol II (abcam) (target is PolII); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44498 | biostudies-arrayexpress
Project description:Heterochromatin protein 1a (HP1a) is a chromatin associated protein that has been well studied in many model organisms, such as Drosophila, where it is a determining factor for classical heterochromatin. HP1a is associated with the two histone methyltransferases SETDB1 and Su(var)3-9, which mediate H3K9 methylation marks and participate in the establishment and spreading of HP1a enriched chromatin. While HP1a is generally regarded as a factor that represses gene transcription, several reports have linked HP1a binding to active genes, and in some cases, it has been shown to stimulate transcriptional activity. To clarify the function of HP1a in transcription regulation and its association with Su(var)3-9, SETDB1 and the chromosome 4 specific protein POF, we conducted genome-wide expression studies and combined the results with available binding data in Drosophila melanogaster. The results suggested that HP1a has a repressing function on chromosome 4, where it preferentially targets non-ubiquitously expressed genes (NUEGs), and a stimulating function in pericentromeric regions. Further, we showed that the effects of SETDB1 and Su(var)3-9 are similar to HP1a, and on chromosome 4, Su(var)3-9, SETDB1 and HP1a target the same genes. In contrast, transposons are repressed by HP1a and Su(var)3-9 but are un-affected by SETDB1 and POF. In addition, we found that the binding level and expression effects of HP1a are affected by gene length. Our results indicate that genes have adapted to be properly expressed in their local chromatin environment. We prepared total RNA from 1st instar larvae trans-heterozygous for HP1a04/HP1a05, trans-heterozygous Su(var)3-9evo/Su(var)3-906, homozygous Setdb110.1/ Setdb110.1 mutants and trans-heterozygous HP1a04 PofD119/HP1a05 PofD119 double mutants three biological replicates, as well as from six biological replicates of wildtype control 1st instar larvae.
2013-04-05 | E-GEOD-43478 | biostudies-arrayexpress
Project description:modENCODE_submission_3771 This submission comes from a modENCODE project of Gary Karpen. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We aim to determine the locations of the major histone modifications across the Drosophila melanogaster genome. The modifications under study are involved in basic chromosomal functions such as DNA replication, gene expression, gene silencing, and inheritance. We will perform Chromatin ImmunoPrecipitation (ChIP) using genomic tiling arrays. We will initially assay localizations using chromatin from three cell lines and two embryonic stages, and will then extend the analysis of a subset of proteins to four additional animal tissues/stages. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-chip. BIOLOGICAL SOURCE: Strain: HP1a mutant Developmental Stage: 3rd Instar Larvae; Genotype: Su(var)205 [4]/Su(var)205 [5]; Transgene: none; NUMBER OF REPLICATES: 4; EXPERIMENTAL FACTORS: Strain HP1a mutant Antibody H3K9me2-Ab2 (new lot) (target is H3K9me2); Developmental Stage 3rd Instar Larvae
2013-02-22 | E-GEOD-44487 | biostudies-arrayexpress
Project description:Heterochromatin protein 1a (HP1a) is a chromatin associated protein that has been well studied in many model organisms, such as Drosophila, where it is a determining factor for classical heterochromatin. HP1a is associated with the two histone methyltransferases SETDB1 and Su(var)3-9, which mediate H3K9 methylation marks and participate in the establishment and spreading of HP1a enriched chromatin. While HP1a is generally regarded as a factor that represses gene transcription, several reports have linked HP1a binding to active genes, and in some cases, it has been shown to stimulate transcriptional activity. To clarify the function of HP1a in transcription regulation and its association with Su(var)3-9, SETDB1 and the chromosome 4 specific protein POF, we conducted genome-wide expression studies and combined the results with available binding data in Drosophila melanogaster. The results suggested that HP1a has a repressing function on chromosome 4, where it preferentially targets non-ubiquitously expressed genes (NUEGs), and a stimulating function in pericentromeric regions. Further, we showed that the effects of SETDB1 and Su(var)3-9 are similar to HP1a, and on chromosome 4, Su(var)3-9, SETDB1 and HP1a target the same genes. In contrast, transposons are repressed by HP1a and Su(var)3-9 but are un-affected by SETDB1 and POF. In addition, we found that the binding level and expression effects of HP1a are affected by gene length. Our results indicate that genes have adapted to be properly expressed in their local chromatin environment.
2013-04-05 | GSE43478 | GEO