This SuperSeries is composed of the SubSeries listed below.
Expression of the PPM1F Gene Is Regulated by Stress and Associated With Anxiety and Depression.
Sex, Age, Specimen part
View SamplesPpm1f regulation in the amygdala after acute stress immobilization
Expression of the PPM1F Gene Is Regulated by Stress and Associated With Anxiety and Depression.
Sex, Age, Specimen part
View SamplesPpm1f regulation in the medial prefrontal cortex (mPFC) after acute stress immobilization
Expression of the PPM1F Gene Is Regulated by Stress and Associated With Anxiety and Depression.
Sex, Age, Specimen part
View SamplesThe generation of neocortical neurons from neural progenitor cells (NPCs) is primarily controlled by transcription factors binding to DNA in the context of chromatin. To understand the complex layer of regulation that orchestrates different NPC types from the same DNA sequence, epigenome maps with cell type resolution are required. Here we present genome-wide histone methylation maps for distinct neural cell populations in the developing mouse neocortex. Using different chromatin features, we identify potential novel regulators of cortical NPCs available for future exploration. Moreover, we identify extensive H3K27me3 changes between NPC subtypes coinciding with major developmental and cell biological transitions. Interestingly, we detect dynamic H3K27me3 changes on promoters of several crucial transcription factors, including the basal progenitor regulator Eomes. We used catalytically inactive Cas9 fused with the histone methyltransferase Ezh2 to edit H3K27me3 at the Eomes locus in vivo, which results in reduced Tbr2 expression and lower basal progenitor abundance, underscoring the relevance of dynamic H3K27me3 changes during neocortex development. Taken together, we provide a rich resource of neocortical histone methylation and outline an approach to investigate its contribution to the regulation of selected genes during neocortical development. Overall design: Gene expression profile of mouse purified neuroepithelial cells (NECs) was generated by RNA-seq. --------------- This represents the RNA-Seq component only
Epigenome profiling and editing of neocortical progenitor cells during development.
Specimen part, Subject
View SamplesBackground
Aberrant mucin assembly in mice causes endoplasmic reticulum stress and spontaneous inflammation resembling ulcerative colitis.
Sex, Age, Specimen part
View SamplesAnalysis of gene-expression profiles by microarrays can be very useful to characterize new potential candidate genes, key regulatory networks, and to define phenotypes or molecular signatures to improve the diagnosis or classification of the disease. We have used this approach in the study of one of the major causes of allergic diseases in Mediterranean countries, the olive pollen response, in order to find differential molecular markers among five clinical groups, Non-allergic, Asymptomatic, Allergic but not to olive pollen, Non-treated, olive pollen allergic patients and Olive pollen allergic patients (under specific-immunotherapy). The results of gene-expression by principal components analysis (PCA) clearly showed five clusters of samples that correlated with the five clinical groups. Analysis of differential gene-expression by multiple testing, and functional analysis by KEGG and Gene-Ontology revealed differential genes and pathways among the 5 clinical groups.
Differential gene-expression analysis defines a molecular pattern related to olive pollen allergy.
No sample metadata fields
View SamplesAmplification of MYCN is the most prominent genetic marker of high-stage neuroblastoma, a childhood tumor originating from the neural crest. We generated a cell line (mNB-A1) from tumors developed in transgenic mouse and treated these cells with DMSO (n=6), the BRD4-inhibitor JQ1 (n=3) or the AURKA-inhibitor MLN8237 (n=3) for 24 h.
A Cre-conditional MYCN-driven neuroblastoma mouse model as an improved tool for preclinical studies.
Specimen part, Cell line, Treatment
View SamplesAmplification of MYCN is the most prominent genetic marker of high-stage neuroblastoma, a childhood tumor originating from the neural crest.
A Cre-conditional MYCN-driven neuroblastoma mouse model as an improved tool for preclinical studies.
Cell line
View SamplesAnalysis of gene-expression profiles with microarrays can be very useful to dissect specific responses and to characterize with a global view, new elements for improving the diagnosis, treatment and understanding of allergic diseases. We have used this approach for studying the olive pollen response, taking advantage our previous results of T-cell epitope mapping on Ole e 1 molecule (the major allergen from olive pollen) in order to analyze the stimuli influence on the gene-expression of olive pollen allergic patients. Peripheral blood mononuclear cells (PBMCs) from 6 healthy controls and 6 allergic subjects were stimulated 24 hours with olive pollen stimuli: Ole e 1 molecule and two Ole e 1 peptides previously defined as P2+3 (aa10-31), mainly recognized by non-allergic subjects (possible immunoregulatory epitope) and P10+12+13 (aa90-130), immunodominant T-cell epitope. RNA extracted from basal and stimulated PBMCs was analyzed by HuGeU133 plus 2.0 GeneChip, Affymetrix (38.500genes). After assessment of data quality by standard quality checks and principal components analysis (PCA), differential gene-expression by experimental conditions was performed by multiple testing, using microarrays specific software. Differences in functional analysis were performed by KEGG, for pathways and Gene-Ontology for biological process. The results of gene-expression by PCA showed differential clusters that correlated with the experimental conditions from samples of allergic patients. Analysis of differential gene-expression by multiple testing, and functional analysis by KEGG and Gene-Ontology revealed differential genes and pathways among the 4 experimental conditions.
Therapeutic targets for olive pollen allergy defined by gene markers modulated by Ole e 1-derived peptides.
Specimen part, Disease
View SamplesBreakdown products of some glucosinolates defense chemicals of Brassicales induce detoxifying enzymes and demonstrate preventive activities against chemically induced tumorigenesis in animal models. However, other breakdown products are genotoxic. 1-Methoxy-3-indolylmethyl alcohol (1-MIM-OH) is mutagenic in bacterial and mammalian cells upon activation by sulphotransferases and forms DNA adducts in mouse tissues. This effect was enhanced in mice transgenic for human sulphotransferases 1A1/2 (FVB/N-hSULT1A1/2). In this study we explored gene expression changes induced by 1-MIM-OH in mouse liver. FVB/N-hSULT1A1/2 mice were orally treated with 1-MIM-OH for 21 or 90 days, leading to high levels of hepatic 1-MIM-DNA adducts. Genome-wide expression analyzes in this tissue demonstrated no influence on detoxifying enzymes, but up-regulation of many mediators of the tumour suppressor p53 and down-regulation of Fhit and other long genes. In conclusion, 1-MIM-OH did not induce protective enzymes, but formed high levels of DNA adducts, which were recognized by affected cells as reflected by p53 activation. While this p53 response might aim to protection, it was unable to prevent the accumulation of DNA adducts. However, various epdemiological studies reported inverse associations between the intake of cruciferous vegetables and cancer. This association might be due to the presence of other glucosinolates with tumour-preventing influences possibly outweighing adverse effects of some metabolites. Nevertheless, 1-MIM-OH is a genotoxic substance inducing a gene expression profile similar to the expression signature caused by known genotoxic hepatocarcinogens.
The glucosinolate metabolite 1-methoxy-3-indolylmethyl alcohol induces a gene expression profile in mouse liver similar to the expression signature caused by known genotoxic hepatocarcinogens.
Sex, Specimen part, Treatment
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