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GenomicsDynamics of enhancer chromatin signatures mark the transition from pluripotency to cell specification during embryogenesis
The generation of distinctive cell types that form different tissues and organs requires precise, temporal and spatial control of gene expression. This depends on specific cis-regulatory elements distributed in the non-coding DNA surrounding their target genes. Studies performed on mammalian embryon...
ORGANISM(S): Danio rerio 
2012-05-08 | E-GEOD-32483 | biostudies-arrayexpress
GenomicsGenome-wide identification of putative cis-regulatory elements through epigenetic profiling in zebrafish
In this study, we have applied ChIP-Seq to identify putative regulatory elements throughout the zebrafish genome. For this purpose we identified sequences within the zebrafish genome that associate with H3K4me1 and H3K4me3, which are epigenetic modifications known to be associated with active cis-r...
ORGANISM(S): Danio rerio 
2011-02-25 | E-GEOD-20600 | biostudies-arrayexpress
TranscriptomicsGene expression profiles of uhrf1 mutant zebrafish
UHRF1 (Ubiquitin-like, containing PHD and RING finger domains, 1) recruits DNMT1 to hemimethylated DNA during replication, is essential for maintaining DNA methylation patterns during cell division and is suggested to direct additional repressive epigenetic marks. Uhrf1 mutation in zebrafish results...
ORGANISM(S): Danio rerio 
2015-02-09 | E-GEOD-55339 | biostudies-arrayexpress
GenomicsConservation and divergence of methylation patterning in plants and animals
Cytosine DNA methylation is a heritable epigenetic mark present in many eukaryotic organisms. While DNA methylation likely has a conserved role in gene silencing, the levels and patterns of DNA methylation appear to vary drastically among different organisms. Here, we used shotgun genomic bisulfite ...
ORGANISM(S): Ciona intestinalis 
2010-04-09 | E-GEOD-21152 | biostudies-arrayexpress
TranscriptomicsNrf2b: a novel zebrafish paralog of the oxidant-responsive transcription factor Nrf2.
We identified a novel paralog of the antioxidant response element transcription factor, Nrf2 in zebrafish. To determine whether the paralogs Nrf2a and Nrf2b regulate different sets of genes, we performed loss-of-function experiments followed by microarray-based gene expression profiling, performed ...
ORGANISM(S): Danio rerio 
2011-12-20 | E-GEOD-32594 | biostudies-arrayexpress
MetabolomicsUntargeted metabolomic analysis in cats with naturally occurring inflammatory bowel disease and alimentary small cell lymphoma
Feline chronic enteropathy (CE) is a common gastrointestinal disorder in cats and mainly comprises inflammatory bowel disease (IBD) and small cell lymphoma (SCL). Differentiation between IBD and SCL can be diagnostically challenging. We characterized the fecal metabolome of 14 healthy cats and 22 ca...
2021-07-13 | MTBLS440 | MetaboLights
TranscriptomicsMicroarray transcriptional analysis of leptin signaling knockdown and rescue in 72-hour post fertilization zebrafish
The effects of leptin-A morpholino oligonucleotides and recombinant leptin-A on embryonic zebrafish transcriptome content were evaluated using Affymetrix 1.1 ST gene array strips.
ORGANISM(S): Danio rerio 
2018-04-02 | E-MTAB-6548 | biostudies-arrayexpress
TranscriptomicsBiological variation between zebrafish development series
Transcriptome analysis during embryogenesis usually requires pooling of embryos to obtain sufficient RNA. Hence, the measured levels of gene-expression represent the average mRNA levels of pooled samples and the biological variation among individuals is lost for inclusion into statistical models use...
ORGANISM(S): Danio rerio 
2010-04-01 | E-GEOD-17736 | biostudies-arrayexpress
TranscriptomicsATAC-sequencing mice small intestinal epithelium with intestinal epithelium specific LSD1 knock out compared to wild type
To study the epigenetic regulation of intestinal epithelium we focus on the role of chromatin modulators. Lysine-specific histone demethylase 1a (KDM1A, LSD1) is one of the enzymes that can erase the H3K4me1/2 mark. To assess the role of LSD1 in intestinal epithelium we studied wild type (WT) (Villi...
ORGANISM(S): Mus musculus 
2021-03-23 | E-MTAB-8718 | biostudies-arrayexpress
MetabolomicsDysregulation of Streptococcus pneumoniae zinc homeostasis breaks ampicillin resistance in a pneumonia infection model

Streptococcus pneumoniae is the primary cause of community-acquired bacterial pneumonia with rates of penicillin and multi-drug resistance exceeding 80% and 40%, respectively. The innate immune response generates a variety of antimicrobial agents to control infection including zinc stres...

2022-02-23 | MTBLS318 | MetaboLights
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