In this study we isolated and cultured neural progenitor cells (NPCs) from human fetal brain collected during the gliogenic phase (second trimester) of aborted fetuses, we differentiated NPCs into astrocyte using different protocols (FBS or CNTF/BMP4) and utilized RNA sequencing to analyze transcriptomic changes underlying the differentiation process Overall design: Neural progenitor cells (NPCs) isolated from 4 different donors (91, 103, 110 and 114 days embryos) were differentiated for 1 week using 2.5% FBS, while 3 NPCs lines (two from 103 and one from 110 days embryo) were differentiated for 1 week in the presence of CNTF/BMP4. RNA was extracted from NPCs before and after differentiation and submitted for sequencing on the Illumina HiSeq 2000 platform
A comparative transcriptomic analysis of astrocytes differentiation from human neural progenitor cells.
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View SamplesWe used microarrays to study the changes in the transcriptional profile upon Snail knockdown in murine lung adenocarcinomas
Snail mediates repression of the Dlk1-Dio3 locus in lung tumor-infiltrating immune cells.
Age, Specimen part
View SamplesWe used microarrays to study the changes in the transcriptional profile upon Snail overexpression in murine lung adenocarcinomas
Snail mediates repression of the Dlk1-Dio3 locus in lung tumor-infiltrating immune cells.
Age, Specimen part
View SamplesRNAseq analysis was conducted to complement the targeted and untargeted metabolomics analysis of livers overexpressing the CoA-degrading enzyme Nudt7 or GFP (control). Lipid metabolism requires coenzyme A (CoA), which is found in multiple subcellular compartments including the peroxisomes. In the liver, CoA levels are dynamically adjusted between the fed and fasted states. The elevation in CoA levels that occurs during fasting is driven by increased synthesis but also correlates with decreased expression of Nudt7, the major CoA-degrading enzyme in the liver. Nudt7 resides in the peroxisomes and we overexpressed this enzyme in mouse livers to determine its effect on the size and composition of the hepatic CoA pool in the fed and fasted states. Nudt7 overexpression did not change total CoA levels but decreased the concentration of short-chain acyl-CoAs and choloyl-CoA in fasted livers, when endogenous Nudt7 activity was lowest. The effect on these acyl-CoAs correlated with a significant decrease in the hepatic bile acid content and in the rate of peroxisomal fatty acid oxidation, as estimated by targeted and untargeted metabolomics, combined with the measurement of fatty acid oxidation in intact hepatocytes. Identification of the CoA species and metabolic pathways affected the overexpression on Nudt7 in vivo supports the conclusion that the nutritionally-driven modulation of Nudt7 activity could contribute to the regulation of the peroxisomal CoA pool and peroxisomal lipid metabolism. Overall design: Liver mRNA profiles of 4 mice injected with adeno-associated virus to overexpress Nudt7 and 4 mice injected with adeno-associated virus to overexpress GFP (control) were generated by RNAseq using Illumina HiSeq1500
Overexpression of Nudt7 decreases bile acid levels and peroxisomal fatty acid oxidation in the liver.
Specimen part, Cell line, Subject
View SamplesLacciac Acid A was indentified as an inhibitor of DMNT1. MCF-7 cells were treated with Lacciac Acid A (200 uM) for 5 days. Changes in gene expression were identified by using Affymetrix Human gene ST1.0 arrays. We used microarrays to determine global changes in gene expression upon treatment with Lacciac Acid A an inhibitor of DMNT1.
Laccaic acid A is a direct, DNA-competitive inhibitor of DNA methyltransferase 1.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Discovery of progenitor cell signatures by time-series synexpression analysis during Drosophila embryonic cell immortalization.
Cell line
View SamplesTo characterize the sequence of events associated with RasV12 immortalization of Drosophila embryonic cells, we generated transcriptional time series during cell line establishment, from primary cultures until passage (P) 19. Overall design: We generated three transcriptional time series from three cell lines (R1, R4 and R5) by sampling the cultures at successive stages, early (P2-4), intermediate (P4-11), and late (P16-19), characterized by different passage times. Time points for the R1 time-series were: P2, P3, P4, P5, P7, P8, P10, P11, P16, P17 and P19; for the R4 time-series: P2, P3, P4, P5, P6, P7, P9, P11, P12, P16, P17 and P19; and for the R5 time-series: P2, P3, P4, P6, P7, P8, P16, P17 and P19
Discovery of progenitor cell signatures by time-series synexpression analysis during Drosophila embryonic cell immortalization.
Cell line, Subject
View SamplesTo characterize the sequence of events associated with RasV12 immortalization of Drosophila embryonic cells, we generated transcriptional time series during cell line establishment, from primary cultures until passage (P) 19.
Discovery of progenitor cell signatures by time-series synexpression analysis during Drosophila embryonic cell immortalization.
Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The transcriptional coregulator MAML1 affects DNA methylation and gene expression patterns in human embryonic kidney cells.
Cell line, Treatment
View SamplesMastermind-like 1 (MAML1) is a transcriptional coregulator that has been associated with early development of many systems such as neuronal, muscular, cardiovascular and urogenital. The present study aimed to explore the genome-wide effects of MAML1 on gene expression and DNA methylation in human embryonic kidney cells. RNA expression was measured using a microarray that screens approximately 36,000 transcripts, and DNA methylation was determined for 450,000 CpG sites. 225 genes were found to be differentially expressed, while 11802 CpG sites were found to be differentially methylated in MAML1-expressing cells. A subset of 211 differentially methylated loci was associated with the expression of 85 genes. Gene ontology analysis revealed that these genes are involved in the regulation of urogenital system development, cell adhesion and embryogenesis.
The transcriptional coregulator MAML1 affects DNA methylation and gene expression patterns in human embryonic kidney cells.
Cell line, Treatment
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