Filters
Technology
Platform
SRP040306
Drosophila melanogaster
8 Downloadable Samples
Illumina HiSeq 2000
Description
The aim of the study was to generate transcriptome of wild-type and G9a mutant adult flies (females) 24h post-infection with Drosophila C Virus (DCV). Overall design: We generated 8 different data sets. For wild-type controls and G9a mutants, we performed both mock and DCV infection, and collected both whole flies and fat bodies. All flies were 3-5 days old females.
Publication Title
The epigenetic regulator G9a mediates tolerance to RNA virus infection in Drosophila.
Sample Metadata Fields
Specimen part, Subject, Time
View Samples- Drosophila melanogaster
- 6 Downloadable Samples
Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
We infected Drosophila S2 cells (invitrogen) with Drosophila C virus (DCV) (Multiplicity of Infection = 10), and harvested samples for further analysis at 8 and 24 hours post-infection.
Publication Title
The heat shock response restricts virus infection in Drosophila.
Sample Metadata Fields
Cell line, Time
View Samples- Drosophila melanogaster
- 12 Downloadable Samples
- Illumina HiSeq 2000
Description
Purpose: Investigating the role of Drosophila G9a in oxidative stress responses. Methods: Flies were collected after eclosion and allowed to recover from CO2 exposure for 5 days prior to paraquat exposure. Paraquat (Methyl viologen dichloride hydrate 98 %; Sigma 856177) was mixed into the flyfood at 40 °C to a final concentration of 50 mM. For OS induction, 5-9 day old flies were transferred to paraquat containing food and incubated at 25 °C and 70 % humidity. At each time point, flies were flash frozen in liquid nitrogen followed by vortexing and filtering through a series of sieves to isolate heads from other body parts. 200 fly heads per sample were used for RNA extraction using QIAGEN lipid mini tissue kit. The TruSeq RNA Sample Preparation Kit v2 (Illumina) was used to prepare adapter ligated PCR fragments for sequencing. PCR was used to selectively enrich the fragments containing the adapters. The PCR fragments were validated using Agilent 2200 TapeStation. Single indexed samples were multiplexed and sequenced on an Illumina HiSeq 2000 sequencing system (Illumina) in single-end mode with a read length of 35 bp. Quality of sequenced reads was assessed with FastQC. The RNAseq experiments were conducted on two biological duplicates for each condition. Sequenced reads were aligned with Burrows-Wheeler algorithm (BWA) (Li & Durbin, 2010) to the Drosophila reference genome (BDGP.5, http://www.fruitfly.org/) and per gene read counts were generated with HTSeq count (Anders et al, 2015). 25–30 million reads with high quality alignment were obtained for each sample and used for differential expression analysis. DESeq (Anders & Huber, 2010) was used to obtain library size-normalized read counts and to calculate differential expression of genes in 4 pairwise comparisons: 0 h versus 6 h and 0 h versus 12 h after OS in both G9a mutants and controls (fold change =1.5, adjusted p-value= 0.05, Benjamini-Hochberg). Results: We found 2731 genes to be differential expressed in at least one of the four pairwise comparisons. The largest group of differentially expressed (DE) genes are highly augmented upon OS induction in the G9a mutant (41.7 % of all DE genes). The second largest group of DE genes (23.9 % of all DE genes) were more downregulated in G9a mutant in response to OS. Genes that are over-activated in G9a mutants are predominantly involved in OS response and OS mediated damage, whereas genes that are downregulated in G9a mutants are involved in energy metabolism. Conclusions: Our data suggest that G9a provides an epigenetic mechanism that safeguards an appropriate transcriptional response to OS and preserves immediately available energy, thereby acting as a critical regulatory hub between the transcriptional and physiological responses to oxidative stress. Overall design: fly-head mRNA libraries of 5-9 days old male G9aDD1 mutant and control during 0, 6 and 12 hours of paraquat oxidative stress exposure were sequenced in duplicate on Hi-seq 2000.
Publication Title
The histone methyltransferase G9a regulates tolerance to oxidative stress-induced energy consumption.
Sample Metadata Fields
Specimen part, Treatment, Subject
View Samples- Homo sapiens
- 8 Downloadable Samples
- Illumina HiSeq 2000
Description
Huge efforts are made to engineer safe and efficient genome editing tools. An alternative might be the harnessing of ADAR-mediated RNA editing. We now present the engineering of chemically optimized antisense oligonucleotides that recruit endogenous human ADARs to edit endogenous transcripts in a simple and programmable way, an approach we refer to as RESTORE. Notably, RESTORE was markedly precise, and there was no evidence for perturbation of the natural editing homeostasis. We applied RESTORE to a panel of standard human cell lines, but also to several human primary cells including hepatocytes. In contrast to other RNA and DNA editing strategies, this approach requires only the administration of an oligonucleotide, circumvents the ectopic expression of proteins, and thus represents an attractive platform for drug development. In this respect we have shown the repair of the PiZZ mutation causing a1-antitrypsin deficiency and the editing of phosphotyrosine 701 in STAT1. Overall design: Identification of off-target editing events and Interferon-a influence in HeLa cell line transfected with an ASO for RNA editing by RNA-Seq, 2 samples (ASO +/- IFN) , 2 control sample (+/-IFN), 2 biologically independent experiments for each sample, 8 samples in total
Publication Title
Precise RNA editing by recruiting endogenous ADARs with antisense oligonucleotides.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples- Homo sapiens
- 13 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
TTCA: an R package for the identification of differentially expressed genes in time course microarray data.
Sample Metadata Fields
Cell line, Treatment
View Samples- Homo sapiens
- 7 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
The analysis of microarray time series promises a deeper insight into the dynamics of the cellular response following stimulation. A common observation in this type of data is that some genes respond with quick, transient dynamics, while other genes change their expression slowly over time. The existing methods for the detection of significant expression dynamics often fail when the expression dynamics show a large heterogeneity, and often cannot cope with irregular and sparse measurements.
Publication Title
TTCA: an R package for the identification of differentially expressed genes in time course microarray data.
Sample Metadata Fields
Cell line, Treatment
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
The analysis of microarray time series promises a deeper insight into the dynamics of the cellular response following stimulation. A common observation in this type of data is that some genes respond with quick, transient dynamics, while other genes change their expression slowly over time. The existing methods for the detection of significant expression dynamics often fail when the expression dynamics show a large heterogeneity, and often cannot cope with irregular and sparse measurements.
Publication Title
TTCA: an R package for the identification of differentially expressed genes in time course microarray data.
Sample Metadata Fields
Cell line, Treatment
View Samples- Mus musculus
- 9 Downloadable Samples
- Illumina HiSeq 2000, Affymetrix Mouse Gene 2.0 ST Array (mogene20st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Histone Deacetylases 1 and 2 Regulate Microglia Function during Development, Homeostasis, and Neurodegeneration in a Context-Dependent Manner.
Sample Metadata Fields
Sex, Age, Specimen part, Treatment
View Samples- Mus musculus
- 44 Downloadable Samples
- Illumina HiSeq 1000
Description
Hdac1 and 2 are important regulators of developmental processes. In this study we created microglia specific compound Hdac1 and Hdac2 knock out mice. Pre-natal ablation of both Hdac1 and 2 from microglia leads to reduced cell number and altered cell morphology. To investigate how Hdac1 and 2 knock out in microglia alters cellular gene expression profile we carried out RNA-seq analysis at different time points. Overall design: We used FACS sorted microglia cells from control and Hdac1/2fl/flCx3cr1Cre (constituitive knockout) or Hdac1/2fl/flCx3cr1CreERT2 (inducible) mice at different time points viz. Embryonic day 16 (E16 - inducible knockout only), Post natal day 0 (P0), 2 and 6 weeks after birth
Publication Title
Histone Deacetylases 1 and 2 Regulate Microglia Function during Development, Homeostasis, and Neurodegeneration in a Context-Dependent Manner.
Sample Metadata Fields
Age, Treatment, Subject
View Samples- Mus musculus
- 9 Downloadable Samples
- Affymetrix Mouse Gene 2.0 ST Array (mogene20st)
Description
Epigenetic alterations has been implicated in the pathology of several neurodegenerative diseases. To investigate the role of microglial Hdac1 and 2 in the pathogenesis of Alzheimer's disease (AD), we created microglia specific compound Hdac1 and Hdac2 knock out mice in 5X FAD background. Genetic ablation of Hdac1 and 2 from microglia reduced amyloid plaque burden and improved spatial learning and memory function.
Publication Title
Histone Deacetylases 1 and 2 Regulate Microglia Function during Development, Homeostasis, and Neurodegeneration in a Context-Dependent Manner.
Sample Metadata Fields
Sex, Specimen part
View Samples