We used microarrays to detail the global programme of gene expression upon the over-expression of seven different differentiation-associated, E1A-regulated microRNAs.
Differentiation-associated microRNAs antagonize the Rb-E2F pathway to restrict proliferation.
Cell line
View SamplesProliferating C2C12 myoblasts were induced to differentiate into myotubes and then infected with adenovirus expressing E1A (Ad-E1A), which induces cell cycle re-entry and dedifferentiation.
Differentiation-associated microRNAs antagonize the Rb-E2F pathway to restrict proliferation.
Specimen part, Cell line, Treatment, Time
View SamplesIdentify genes in the aorta whose expressions under genetic regulation in the Hybrid Mouse Diversity Panel (HMDP). The HDMP is comprised of classical inbred and recombinant inbred wild-type mice. The RMA values of genes were used for genome-wide association as described in Bennett et al. Genome Research 2010 (PMID 20054062). These data were used to identify candidate genes at loci associated with atherosclerosis.
High-resolution association mapping of atherosclerosis loci in mice.
Sex, Age, Specimen part
View SamplesThe endoplasmic reticulum (ER) is the site of secretory lipoprotein production and de novo cholesterol synthesis, yet little is known about how these activities are coordinated with each other, or with the activity of the COPII machinery, which transports ER cargo to the Golgi. The Sar1B component of this machinery is mutated in Chylomicron Retention Disorder, establishing that this Sar1 isoform secures delivery of dietary lipids into the circulation.
The endoplasmic reticulum coat protein II transport machinery coordinates cellular lipid secretion and cholesterol biosynthesis.
No sample metadata fields
View SamplesIn this study, we analyzed the impact of a mutation in the wrn-1 gene compared to wild type worms and the dietary supplementation of vitamin C on the global mRNA expression of the whole C. elegans by the RNA-seq technology. Overall design: Whole C. elegans mRNA profiles at the L4 stage of wild type and wrn-1(gk99) mutant animals treated with or without 10 mM ascorbate were generated by deep sequencing, in triplicate, using the HiSeq 2000 machine form Illumina. Detailed statistics on the quality of the reads were calculated with FastQC (http://www.bioinformatics.babraham.ac.uk/projects/fastqc/). The 50 base pairs raw sequences were aligned on the C. elegans ce10/W220 genome with TopHat using the Ensembl annotations provided with the Illumina iGenomes. The htseq-count software (http://www-huber.embl.de/users/anders/HTSeq) was used to count the number of reads aligned to each gene. These counts were then normalized relative to the sequencing depth with DESeq.
Expression profile of Caenorhabditis elegans mutant for the Werner syndrome gene ortholog reveals the impact of vitamin C on development to increase life span.
Specimen part, Treatment, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Oxidative stress activates a specific p53 transcriptional response that regulates cellular senescence and aging.
Age, Specimen part
View SamplesWe sought to find molecular signatures of the SGZ cell types, and to characterize the molecular pathways and transcription factor cascades that define the neurogenic niche. We used laser capture microdissection and DNA microarrays to profile gene expression in the inner (SGZ) and outer portions of the dentate gyrus (DG). Since the vast majority of the cells in the DG are mature granule cells, we compared the expression of the inner and outer portions to reveal molecular markers for the less numerous populations of the SGZ.
Conserved molecular signatures of neurogenesis in the hippocampal subgranular zone of rodents and primates.
Sex, Specimen part
View SamplesGene expression is controlled by transcription factors (TFs) that consist of DNA-binding domains (DBDs) and activation domains (ADs). The DBDs have been well- characterized, but little is known about the mechanisms by which ADs effect gene activation. Here we report that diverse ADs form phase-separated condensates with the Mediator coactivator. For the OCT4 and GCN4 TFs, we show that the ability to form phase-separated droplets with Mediator in vitro and the ability to activate genes in vivo are dependent on the same amino acid residues. For the estrogen receptor (ER), a ligand-dependent activator, we show that estrogen enhances phase separation with Mediator, again linking phase separation with gene activation. These results suggest that diverse TFs can interact with Mediator through the phase-separating capacity of their ADs and that formation of condensates with Mediator is involved in gene activation. Overall design: RNA-seq in mouse embryonic stem cells after OCT4 degradation or LIF withdrawal
Transcription Factors Activate Genes through the Phase-Separation Capacity of Their Activation Domains.
Treatment, Subject
View SamplesTo explore the molecular basis for TSC22D4 function in hepatic lipid homeostasis in vivo TSC22D4 was knocked down in the mouse liver using adenovirus and performed genome wide expression analysis.
TSC22D4 is a molecular output of hepatic wasting metabolism.
Specimen part
View SamplesMedulloblastoma is the most common form of malignant paediatric brain tumour and is the leading cause of childhood cancer related mortality. The four molecular subgroups of medulloblastoma that have been identified WNT, SHH, Group 3 and Group 4 - have molecular and topographical characteristics suggestive of different cells of origin. Definitive identification of the cell(s) of origin of the medulloblastoma subgroups, particularly the poorer prognosis Group 3 and Group 4 medulloblastoma, is critical to understand the pathogenesis of the disease, and ultimately for the development of more effective treatment options.
Gene expression analyses of the spatio-temporal relationships of human medulloblastoma subgroups during early human neurogenesis.
Sex, Age
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