GEO DataSets

(Submitter supplied) Study of hypoxia-induced differential expression during zebrafish development at gastrulation (shield) and segmentation (8-somite) stages

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL13784

8 Samples

Download data: XYS

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Danio rerio

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by array

Platforms:

GPL14875 GPL10816

10 Samples

Download data: BW, TXT

(Submitter supplied) Analysis of gene expression changes in the von Hippel Lindau when mutant compared to wild-type at 4dpf using a whole genome microarray expression profiling. The von Hippel Lindau mutant displays a systemic hypoxic response under normoxic conditions. We performed single-colour microarrays to identify the gene expression changes which underpin the hypoxic phenotype. We used 3 biological replicates from both mutant and control, followed by analysis using Limma to identify significant gene expression changes. more...

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL10816

6 Samples

Download data: TXT

(Submitter supplied) Analysis of the binding sites of Hif-1α in both wild-type and von Hippel Lindau mutant zebrafish lines at 4dpf by ChIP linked next generation sequencing. The von Hippel Lindau mutant displays a systemic hypoxic response under normoxic conditions. Results show the extent of Hif-1α binding to the genome, and provide a basis for analysis of the transcriptional response to genetically induced hypoxia in zebrafish.

Organism:

Danio rerio

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL14875

4 Samples

Download data: BW, TXT

(Submitter supplied) Gene expression profile of the response to chronic constant hypoxia in the heart of adult zebrafish Keywords: Adaptive response to chronic constant hypoxia in the heart

Organism:

Danio rerio

Type:

Expression profiling by array

Dataset:

GDS2425

Platform:

GPL1319

10 Samples

Download data: CEL, EXP

Analysis of hearts of wild type Tuebingen animals subjected to chronic constant hypoxia.

Organism:

Danio rerio

Type:

Expression profiling by array, count, 2 stress sets

Platform:

GPL1319

Series:

GSE4989

10 Samples

Download data: CEL, EXP

(Submitter supplied) In zebrafish, vitellogenic oocytes can incorporate significant amounts of 17β-estradiol released from nearby granulosa cells according to a first-order kinetics, since the steroid low polarity ensures high permeability and affinity for yolk lipids. Estrogen bioactivity is likely, because the maternal mRNA for the estrogen receptor-β2 (ers2a) is highly expressed in ovulated oocytes. This transcript is available for translation in the embryo until its sharp decline from 4 to 8 hours post-fertilization (hpf), being replaced by low levels of zygotic ers2a mRNA from 24 hpf to hatching at 48 hpf, as determined by qRT-PCR. more...

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL6457

2 Samples

Download data: TXT

(Submitter supplied) Very little is known on the nature of epigenetic states in developing zebrafish despite its growing importance as a model organism in developmental biology. We report histone modifications on promoters of pluripotency genes in zebrafish embryos at the mid-late blastula transition (MBT+) stage. We identify three classes of expressed genes based on these profiles: (1) those with a promoter occupied by marks of active genes without any repressive marks; (2) those co-occupied by both activating and repressive modifications; of these genes, klf4 was notably found to be mosaically expressed in the embryo, possibly accounting for this epigenetic pattern; (3) those occupied by repressive marks with, surprisingly, little not acetylated H3K9 or H4. more...

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL9998

7 Samples

Download data: TXT

(Submitter supplied) Cardiomyopathies-associated metabolic pathologies (e.g. T2D and insulin resistance) are a leading cause of mortality. It is known that the association between the pathologies works in both directions, where heart failure can lead to metabolic derangements such as insulin resistance. This intricate crosstalk exemplifies the importance of a fine coordination between one of the most energy demanding organs and an equilibrated carbohydrate metabolism. more...

Organism:

Danio rerio

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18413

6 Samples

Download data: TXT

(Submitter supplied) Glucose transporter 2 (GLUT2) is a key player in the regulation of glucose dynamics in organs central to metabolism, namely the liver, pancreas and intestine In humans, mutations of the GLUT2 gene (Fanconi-Bickel syndrome) cause important defects in glucose homeostasis. Although GLUT2 has been studied in the context of its participation in peripheral and central glucose sensing, to date it is still unclear which role it plays in the brain. more...

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL13390

6 Samples

Download data: TXT

(Submitter supplied) Long non-coding RNAs (lncRNAs) are the master regulators of numerous biological processes. Hypoxia causes oxidative stress with severe and detrimental effects on brain function and acts as a critical initiating factor in the pathogenesis of Alzheimer's disease (AD). From the RNA-Seq in the forebrain (Fb), midbrain (Mb), and hindbrain (Hb) regions of hypoxic and normoxic zebrafish, we identified novel lncRNAs, whose potential cis targets showed involvement in neuronal development and differentiation pathways. more...

Organism:

Danio rerio

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24995

15 Samples

Download data: TXT

(Submitter supplied) The local background was subtracted from the fluorescent value of each spot. Feature intensities were extracted from scanned microarray images using GenePix Pro 5.1. (Axon Instruments). The images were visually inspected, and spots from low-quality areas of the array were flagged and excluded from further analysis. Spots were also excluded from analysis if both the combined fluorescent intensity for both channels was less than 1.4 times that of the local background and the pixel-by-pixel correlation coefficient of the spot was less than 0.4. more...

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL1743

5 Samples

Download data

(Submitter supplied) RNA sequencing profiling of cumulus cells revealed that the follicles of older women have a compromised environment with hypoxic stress being the main contributor to age-related oocyte quality decay.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

20 Samples

Download data: CSV