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Dynamic placement of the linker histone H1 regulates nucleosome arrangement and coordinates gene transcription in early Drosophila embryos[ChIP-Seq]

ABSTRACT: H1 ChIP-seq profiling and nucleosome MNase-seq profiling were performed in after egg laying (AEL) 3-4 hours (hr) and 14-15hr Drosophila melanogaster embryos (W1118).

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE101327 | GEO | 2018/07/12

REPOSITORIES: GEO

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Dynamic placement of the linker histone H1 regulates nucleosome arrangement and coordinates gene transcription in early Drosophila embryos[RNA-Seq]

Project description:Expression profiles of in after egg laying (AEL) 3-4 hours (hr) and 14-15hr Drosophila melanogaster embryos (W1118)

2018-07-12 | GSE101328 | GEO

D. melanogaster eye-antennal imaginal discs developmental transcriptome

Project description:Transcriptomes of Drosophila melanogaster eye-antennal imaginal discs at three sequential larval stages: late 2nd instar (72h after egg laying (AEL)), mid 3rd instar (96h AEL) and late 3rd instar (120h AEL).

2018-01-08 | GSE94915 | GEO

Dynamic placement of the linker histone H1 regulates nucleosome arrangement and coordinates gene transcription in early Drosophila embryos

Project description:This SuperSeries is composed of the SubSeries listed below.

2018-07-12 | GSE101330 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis of Drosophila larval Wild Type and TFAM RNAi (r4-gal4>TFAM RNAi) Fat body Transcriptomes

Project description:Purpose: The goal of this RNA-Seq is to analyze the transcriptomes from wild type and TFAM RNAi fat body samples at 96 hr AEL (after egg laying) and to identify the differentially expressed genes. Methods: Drosophila larval fat bodies were isolated from wild type and TFAM RNAi (r4-gal4) animals at 96 hrs AEL (after egg laying) of development. mRAN profiles were generated by Next Generation Sequencing Facilities. Results: RNA Seq differential expression analysis identified a significant change in 1758 transcripts, with 1213 transcripts showing reduced expression levels and 545 transcripts with elevated expression levels.

2022-03-19 | GSE198604 | GEO

mRNA-seq in Drosophila larval fat body

Project description:We performed mRNA-seq from hand-dissected fat body tissue from 68hr (after egg laying, AEL) and 92hr AEL Drosophila melanogaster larvae. Fat body was dissected from wild-type (OrR) males and testes were removed. We examined gene expression genome-wide with particular focus on genes in the underreplicated regions in the fat body.

2018-07-25 | GSE90915 | GEO

ORC2 ChIP-seq in Drosophila larval fat body

Project description:We analyzed Origin Recognition Complex Subunit 2 (ORC2) ChIP-seq from hand-dissected fat body tissue from 68hr (after egg laying, AEL), 92hr AEL, and late-third wandering Drosophila melanogaster larvae. Fat body was dissected from wild-type (OrR) males and testes were removed. We examined ORC2 binding genome-wide with particular focus on the underreplicated regions in the fat body.

2018-07-25 | GSE90916 | GEO

Dynamic placement of the linker histone H1 associated with nucleosome arrangement and gene transcription in early Drosophila embryonic development.

Project description: Not available

| S-EPMC6037678 | biostudies-literature

Expression profile analysis of Drosophila melanogaster embryonic and larval MANF mutants together with paternal rescue and overexpression conditions

Project description:To find out possible pathways and processes influenced by DmMANF we compared the changes in MANF null and overexpressing animals. We used two developmental stages of Drosophila, st 17 embryos and 29-50 hrs after egg laying (AEL) larvae. The timing were decided according to the lethality of MANF mutants with or without maternal contribution of MANF. Maternal and zygotic MANF mutants (MANFmzD96) were compared to paternal rescue and wild type embryos of the same age. Zygotic MANF mutants (MANFD96) with maternal contribution were compared to wild type and MANF ectopic overexpression larvae harvested well before the average lethality occured (75 hrs AEL). The changes in expression profiles were more drastic in MANFmzD96 embryos than in MANFD96 larvae. Gene ontology annotations were analyzed and clustered by DAVID. The major result was alterations in membranes, changes in membrane transporter expressions and disturbed intracellular membrane traffic. The results were verified by qPCR and transmission electron microscopy. Two developmental stages - 21-24 hrs and 29-50 hrs AEL of MANFD96 mutants without and with maternal contribution were compared to wild type (Wmix means crossed w1118 x w- ) and with paternal rescue or ectopic overexpression of MANF respectively by Drosophila Agilent microarray expression platform.

2012-04-19 | E-GEOD-28820 | biostudies-arrayexpress

Transcriptome analysis of Drosophila Kr-h1 mutants

Project description:Transcriptome analysis (RNA-Seq) was performed to identify Kr-h1 target genes. Message RNAs were extracted from wildtype and kr-h1[7] homozygous 3rd instar larvae at 100 hr after egg laying (two biological replicates for each genotype).

2016-12-31 | GSE85863 | GEO

Novel nucleosomal particles containing core histones and linker DNA but no histone H1

Project description:The nucleosome plays a central role in genome regulation. Traditional methods for mapping nucleosomes depend on the resistance of the nucleosome core to micrococcal nuclease (MNase). However, the lengths of the protected DNA fragments are heterogeneous, limiting the accuracy of nucleosome position information. To resolve this problem, we removed residual linker DNA by simultaneous digestion of yeast chromatin with MNase and exonuclease III (ExoIII). Paired-end sequencing of mono-nucleosomes revealed not only core particles (145-147 bp), but also intermediate particles in which ~8 bp project from one side (154 bp) or both sides (161 bp) of the nucleosome core. We term these particles "pseudo-chromatosomes" because they are present in yeast lacking linker histone. They are also observed after MNase-ExoIII digestion of chromatin reconstituted using recombinant core histones. We propose that the pseudo-chromatosome provides a DNA framework to facilitate H1 binding. Comparison of budding yeast nucleosome sequences obtained using micrococcal nuclease (MNase-seq) and MNase + exonuclease III (ExoIII) (MNase-ExoIII-seq): wild type cells and hho1-null cells. Nucleosome sequences from native chromatin and H1-depleted chromatin from mouse liver. Nucleosome sequences from a plasmid reconstituted into nucleosomes using recombinant yeast histones or native chicken erythrocyte histones.

2015-09-23 | E-GEOD-65889 | biostudies-arrayexpress

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