The weaning period consist of a critical postnatal window for structural and physiologic maturation of rat beta cells. To investigate transcriptome changes involved in the maturation of beta cells neighboring this period we performed microarray analysis in FACS beta cell enriched populations to detail the global programme of gene expression to identify its changes during this process.
Transcriptome landmarks of the functional maturity of rat beta-cells, from lactation to adulthood.
Sex
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Human pre-valvular endocardial cells derived from pluripotent stem cells recapitulate cardiac pathophysiological valvulogenesis.
Specimen part
View SamplesInterleukin (IL)-17 plays an important and protective role in host defence and has been demonstrated to orchestrate airway inflammation by cooperating with and inducing proinflammatory cytokines. Mircoarrays were used to identify immediate-early/ primary response IL-17A-dependent gene transcripts in primary human bronchial ASM cells from mild asthmatic and healthy individuals.
IL-17A mediates a selective gene expression profile in asthmatic human airway smooth muscle cells.
Sex, Age, Specimen part, Treatment, Subject, Time
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Stabilization of the promoter nucleosomes in nucleosome-free regions by the yeast Cyc8-Tup1 corepressor.
No sample metadata fields
View SamplesFirst experiment: Cells were cultured in sulfur amino acid-free DMEM supplemented with 0.1 mM methionine + 0.1 mM cysteine (complete) or supplemented only with 0.1 mM methionine (cysteine-free). Cells were cultured in either medium for 42 h (Long + Cys; Long -Cys) or in cysteine-free medium for 36 h followed by 6 h in complete medium (Short +Cys)
HepG2/C3A cells respond to cysteine deprivation by induction of the amino acid deprivation/integrated stress response pathway.
No sample metadata fields
View SamplesMouse ES cells were differentiated for 6 days. Undifferentiated cells (d0) were compared to cells harvested at 24 hour timepoints (d1-d6).
Transcriptional profiling of mouse and human ES cells identifies SLAIN1, a novel stem cell gene.
Age, Specimen part, Cell line, Time
View SamplesUndifferentiated cells of different passage numbers (p19 and p128) were compared to cells differentiated in hanging drops for 5 days (d5 embryoid bodies) or expanded on gelatin coated dishes for a further 9 days (d14 embryoid bodies).
Transcriptional profiling of mouse and human ES cells identifies SLAIN1, a novel stem cell gene.
Age, Specimen part, Cell line, Time
View SamplesThe yeast Ssn6-Tup1 complex regulates gene expression through a variety of mechanisms, including positioning of nucleosomes over promoters of some target genes to limit accessibility to the transcription machinery. To further define the functions of Ssn6-Tup1 in gene regulation and chromatin remodeling, we performed genome-wide profiling of changes in nucleosome organization and gene expression that occur upon loss of SSN6 or TUP1, and observed extensive nucleosome alterations in both promoters and gene bodies of derepressed genes. Our improved nucleosome profiling and analysis approaches revealed low-occupancy promoter nucleosomes (P nucleosomes) at locations previously defined as nucleosome-free regions. In the absence of SSN6 or TUP1, this P nucleosome is frequently lost, whereas nucleosomes are gained at -1 and +1 positions, accompanying up-regulation of downstream genes. Our analysis of public ChIP-seq data revealed that Ssn6 and Tup1 preferentially bind TATA-containing promoters, which are also enriched in genes derepressed upon loss of SSN6 or TUP1. These results suggest that stabilization of the P nucleosome on TATA-containing promoters may be a central feature of the repressive chromatin architecture created by the Ssn6-Tup1 corepressor, and that releasing the P nucleosome contributes to gene activation.
Stabilization of the promoter nucleosomes in nucleosome-free regions by the yeast Cyc8-Tup1 corepressor.
No sample metadata fields
View SamplesHepG2/C3A cells cultured for 42 h in complete or leucine-devoid medium
HepG2/C3A cells respond to cysteine deprivation by induction of the amino acid deprivation/integrated stress response pathway.
No sample metadata fields
View SamplesComparison of gene expresion profile of 4 SC clones and 4 SI clones at different time points defined a stabilization competency signiture required for successful reprogramming Overall design: mRNA profilling 4 SI clones at 5 time points, 4 SC clones at 6 time points, and 3 feeder samples.
A late transition in somatic cell reprogramming requires regulators distinct from the pluripotency network.
Specimen part, Subject
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