The purpose of this experiment is to understand which transcripts are differentially expressed following exposure to TCDD.
TCDD inhibits heart regeneration in adult zebrafish.
Treatment
View SamplesThe discovery of the first histone demethylase in 2004 (LSD1/KDM1) opened new avenues for the understanding of how histone methylation impacts cellular functions. A great number of histone demethylases have been identified since, which are potentially linked to gene regulation as well as to stem cell self-renewal and differentiation. KDM6A/UTY and KDM6B/JMJD3 are both H3K27me3/2-specific histone demethylases, which are known to play a central role in regulation of posterior development, by regulating HOX gene expression. So far nothing is known about the role of histone lysine demethylases (KDMs) during early hematopoiesis. We are studying the role of KDM6A and KDM6B on self-renewal, global gene expression and on local and global chromatin states in embryonic stem cells (ESCs) and during differentiation. In order to completely abrogate KDM6 demethylase activity in ESCs we employed a specific inhibitor (GSK-J4, Kruidenier et al. 2012). Treatment of ESCs with GSK-J4 had no effect on viability and proliferation . However, ESC differentiation in the presence of GSK-J4 was completely abrogated. In conclusion we show that ESC differentiation is completely blockend in the absence of any H3K27 demethylase activity.
Inhibition of KDM6 activity during murine ESC differentiation induces DNA damage.
Cell line, Treatment
View SamplesMicrosatellite instability (MSI), caused by defective mismatch repair, is observed in a subset of colorectal cancers (CRCs). We evaluated somatic mutations in microsatellite repeats of genes chosen based on reduced expression in MSI CRC and existence of a coding mononucleotide repeat.
Candidate driver genes in microsatellite-unstable colorectal cancer.
Specimen part
View SamplesIn this study gene expression of monocyte-derived macrophages (MDM) from chronic obstructive pulmonary disease (COPD) patients and healthy subjects was investigated. MDM were treated with LPS, a combination of fine TiO2 and ultrafine Printex90 particles, or remained untreated.
Tissue-specific induction of ADAMTS2 in monocytes and macrophages by glucocorticoids.
No sample metadata fields
View SamplesThe epicardium, an epithelium covering the heart, is essential for cardiac development. During embryogenesis, the epicardium provides instructive signals for the growth and maturation of cardiomyocytes and for coronary angiogenesis. We generated an in vitro model of human embryonic epicardium derived from human pluripotent stem cells (hPSC-epi). These cells were able to differentiate into cardiac fibroblasts (cf) and smooth muscle cells (smc) in vitro (hPSC-epi-cf and hPSC-epi-smc respectively). Furthermore, we showed that they improved maturation of hPSC-derived cardiomyocytes (hPSC-cardio) in vitro while neural crest cells derived from hPSC (hPSC-NC) could not. Furthermore, they improved survival of hPSC-cardio and stimulated angiogenesis when injected in a rat model of myocardium infarction. We performed mRNA sequencing of the hPSC-epi, hPSC-epi-cf, hPSC-smc and hPSC-NC in order to identify the secreted molecules specifically produced by the hPSC-epi and/or its derivatives in comparison with the hPSC-NC. Vascular smooth muscle cells have different embryonic origins and different properties depending on their location in the body. The coronary smooth muscle cells come from the epicardium while the aortic ones come from the mesoderm or the neural crest. We performed mRNA sequencing of human coronary artery smc and human aortic smc to identify a specific signature of the coronary smc. We also compared the genes expressed in the hPSC-epi-smc and the smc derived from hPSC-derived lateral plate mesoderm. Overall design: For hPSC-derived samples the three replicates are coming from three different in vitro differentiations from H9. For the human primary cells, the triplicates are technical replicates (three different wells from the same culture at the same passage)
Epicardial cells derived from human embryonic stem cells augment cardiomyocyte-driven heart regeneration.
Specimen part, Subject
View SamplesIn order to distinguish transcription changes from RNA modification and post transcription changed, nascent RNA seq via metabolic labeling of freshly synthesized RNA was carried out using 4sU labeling/biotin purification. Overall design: nascent RNA was extractred post N-MYC activation and compared with untreated cells nascent RNA to gather fold changes of pre-mRNA on gene basis.
MYC Recruits SPT5 to RNA Polymerase II to Promote Processive Transcription Elongation.
Treatment, Subject
View SamplesHLX was found as a VEGF-A induced gene in HUVEC (B.Schweighofer, submitted). In order to detect genes regulated by HLX HUVEC were infected by recombinant adenovirus expressing HLX for 4, 8, 16 and 32h. RNA was isolated and subjected to microarray analysis using Affymetrix microarray.
The VEGF-regulated transcription factor HLX controls the expression of guidance cues and negatively regulates sprouting of endothelial cells.
No sample metadata fields
View SamplesStudy of Sox18 regulated genes: Human umbilical vein endothelial cells (HUVEC) were either transduced with adenoviral vectors expressing SOX18 from an IRES-EGFP casette, or IRES-EGFP alone, or left untreated. After 16 hours, mRNA was isolated and analyzed by hybridization to Affymetrix HG-U133A arrays.
The transcription factor SOX18 regulates the expression of matrix metalloproteinase 7 and guidance molecules in human endothelial cells.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Host Transcription Profile in Nasal Epithelium and Whole Blood of Hospitalized Children Under 2 Years of Age With Respiratory Syncytial Virus Infection.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesGene expression profiling was carried out in six (wild type, ß2SP+/-, ß2SP-/-, SMAD3+/-, SMAD3-/- and ß2SP+/-/ SMAD3+/-) different mouse knockout embryonic fibroblast (MEF) cells. Beta-2-spectrin (ß2SP) is a dynamic intracellular non-pleckstrin homology (PH)-domain protein that belongs to a family of polypeptides that have been implicated in conferring cell polarity. Spectrins have been linked to multiple signaling pathways, including cell cycle regulation, DNA repair and TGFß signaling. In this study, we report a major role of the TGFß/Smad3 adaptor ß2-Spectrin in conserving genomic integrity from alcohol-induced DNA damage and describe a novel pathway that protects genomes from genotoxic stresses. To determine the mechanism for the oncogenic switch, and whether it is related to the role of ß2SP in TGF-ß signaling transduction or secondary to its cytoskeletal functions, we analyzed disruption of two elements of the TGF-ß pathway by generating double heterozygous Sptbn1+/-/Smad3+/- mice. Overall design: Whole-transcriptome RNA sequencing MEF cells of the following genotypes was carried out on an Illumina HiSeq 2000 sequencer: wildtype, heterozygous Beta-2-spectrin knockout (ß2SP+/-), homozygous Beta-2-spectrin knockout (ß2SP-/-), heterozygous SMAD3 (Mothers against decapentaplegic, Drosophila, Homolog of 3, SMAD3+/-), homozygous knockout SMAD3-/-, and double heterozygous mutation of Beta-2-spectrin and SMAD3 (ß2SP+/-/ SMAD3+/-).
TGF-β/β2-spectrin/CTCF-regulated tumor suppression in human stem cell disorder Beckwith-Wiedemann syndrome.
No sample metadata fields
View Samples