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GSE35918
Xenopus laevis
20 Downloadable Samples
Affymetrix Xenopus laevis Genome Array (xenopuslaevis)
Description
Eye development is a multistep process that requires specific inductive signals and precise morphogenetic movements, starting early during development in the eye-field, a well-definite region of the anterior neural plate. It has been demonstrated that a gene network of eye field transcription factors (EFTFs) contributes to specify the neural and retinal fate of the eye field. Among these EFTFs, Xrx1 is involved in proliferation and neurogenesis in the eye field and is necessary for the correct development of the retina.
Publication Title
Brief report: Rx1 defines retinal precursor identity by repressing alternative fates through the activation of TLE2 and Hes4.
Sample Metadata Fields
Specimen part
View Samples- Danio rerio
- 18 Downloadable Samples
- Affymetrix Zebrafish Genome Array (zebrafish)
Description
Adult zebrafish can completely regenerate their caudal fin following amputation. This complex process is initiated by the formation of an epithelial would cap over the amputation site by 12 hours post amputation (hpa). Once the cap is formed, mesenchymal cells proliferate and migrate from sites distal to the wound plane and accumulate under the epithelial cap forming the blastemal structure within 48 hpa. Blastemal cells proliferate and differentiate, replacing the amputated tissues, which are populated with angiogenic vessels and innervating nerves during the regenerative outgrowth phase which is completed around 14 days post amputation (dpa). Regenerative outgrowth does not occur in TCDD-exposed zebrafish. To identify the molecular pathways that are perturbed by TCDD exposure, male zebrafish were i.p. injected with 50 ng/g TCDD or vehicle and caudal fins were amputated. Regenerating fin tissue was collected at 1, 3 and 5 dpa for mRNA abundance analysis. Microarray analysis and quantitative real time PCR revealed that wound healing and regeneration alone altered the expression of nearly 900 genes by at least two fold between 1 and 5 dpa. TCDD altered the abundance of 370 genes at least two fold. Among these, several known aryl hydrocarbon responsive genes were identified in addition to several genes involved in extracellular matrix composition and metabolism. The profile of misexpressed genes is suggestive of impaired cellular differentiation and extracellular matrix composition potentially regulated by Sox9b.
Publication Title
Regenerative growth is impacted by TCDD: gene expression analysis reveals extracellular matrix modulation.
Sample Metadata Fields
Sex, Time
View Samples- Danio rerio
- 12 Downloadable Samples
- Affymetrix Zebrafish Genome Array (zebrafish)
Description
Exposures to dioxin, including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) cause a wide array of toxicities in vertebrates and is mostly considered to be mediated through the inappropriate activation of the aryl hydrocarbon receptor (Ahr) signaling pathway. Although transcriptional regulation by Ahr is widely studied, the molecular mechanisms responsible for the adverse outcomes after Ahr activation are largely unknown. To identify the important events downstream of AHR activation that play an actual role in the toxic responses, we employed the zebrafish caudal fin regeneration models since Ahr activation blocks the regenerative process. Zebrafish regenerate their caudal fins by an orchestrated progression of cell migration, differentiation and proliferation controlled by a multitude of signaling pathways. This complex process was exploited as an in vivo platform to identify cross talk between Ahr and other signaling pathways. Global genomic analysis was performed in the larval regenerating fin tissue after exposure to TCDD in order to identify genes differentially regulated after Ahr activation. Comparative toxicogenomic analysis revealed that both adult and larval fins respond to TCDD during regeneration with mis-expression of Wnt signaling pathway members and Wnt target genes.
Publication Title
Crosstalk between AHR and Wnt signaling through R-Spondin1 impairs tissue regeneration in zebrafish.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 5 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Macrophages phagocytose bacteria. Certain pathogenic bacteria access and replicate within the cytosol of infected macrophages and induce changes in macrophage gene expression by triggering of innate immune receptors and/or the effects of bacterial virulence factors. We used microarray analysis to identify changes in macrophage gene expression following infection with Listeria monocytogenes.
Publication Title
Induction of IFN-alphabeta enables Listeria monocytogenes to suppress macrophage activation by IFN-gamma.
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus, Homo sapiens
- 67 Downloadable Samples
Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2), Affymetrix Mouse Genome 430 2.0 Array (mouse4302), Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Integrative genomic signatures of hepatocellular carcinoma derived from nonalcoholic Fatty liver disease.
Sample Metadata Fields
Age, Specimen part, Disease
View Samples- Mus musculus
- 35 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2), Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Liver global gene expression patterns of 9 GNMT-knockout mice histopathologically determined to have non-alcoholic steatohepatitis (NASH) and hepatocellular carcinoma (HCC) together with 10 MAT1A-knockout mice histopathologically determined to have steatosis and NASH. All these have their respective wild type patterns. These were analyzed to define signatures to study the pathogenesis of NAFLD-derived HCC, explore which subtypes of cancers can be investigated using mouse models and define a signature of HCC differential survival that can be used to characterize HCC subtypes of different survival derived from mixed etiologies.
Publication Title
Integrative genomic signatures of hepatocellular carcinoma derived from nonalcoholic Fatty liver disease.
Sample Metadata Fields
Age, Specimen part, Disease
View Samples- Mus musculus
- 26 Downloadable Samples
- Affymetrix Mouse Gene 2.0 ST Array (mogene20st)
Description
We hypothesize that germline variation influences susceptibility to aggressive prostate tumor
Publication Title
GNL3 and SKA3 are novel prostate cancer metastasis susceptibility genes.
Sample Metadata Fields
Specimen part
View Samples- Danio rerio
- 24 Downloadable Samples
- Affymetrix Zebrafish Genome Array (zebrafish)
Description
Zebrafish have the remarkable ability to regenerate body parts including the heart, spinal cord and fins by a process referred to as epimorphic regeneration. Recent studies have illustrated that similar to adult zebrafish, early life stage-larvae also possess the ability to regenerate the caudal fin. A comparative genomic analysis was used to determine the degree of conservation in gene expression among the regenerating adult caudal fin, adult heart and larval fin. Results indicate that these tissues respond to amputation/injury with strikingly similar genomic responses. Comparative analysis revealed raldh2, a rate-limiting enzyme for the synthesis of Retinoic acid (RA), as one of the highly induced genes across the three regeneration platforms.
Publication Title
Comparative expression profiling reveals an essential role for raldh2 in epimorphic regeneration.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 17 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Global gene expression patterns of 2 human steatosis and 9 human non-alcoholic steatohepatitis (NASH) together with their respective control patterns were analyzed to define the non-alcoholic fatty liver disease (NAFLD) progression molecular characteristics and to define NASH early markers from steatosis.
Publication Title
Integrative genomic signatures of hepatocellular carcinoma derived from nonalcoholic Fatty liver disease.
Sample Metadata Fields
Specimen part, Disease
View Samples- Mus musculus
- 15 Downloadable Samples
- Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2), Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Liver global gene expression patterns of 15-month-old MAT1A knockout mice histopathologically determined to have hepatocellular carcinoma (HCC). 5 samples are of tumoral tissue and 5 samples are of peritumoral tissue. All these have their respective wild type patterns. These were analyzed to define signatures to study the pathogenesis of NAFLD-derived HCC, explore which subtypes of cancers can be investigated using mouse models and define a signature of HCC differential survival that can be used to characterize HCC subtypes of different survival derived from mixed etiologies.
Publication Title
Integrative genomic signatures of hepatocellular carcinoma derived from nonalcoholic Fatty liver disease.
Sample Metadata Fields
Age, Specimen part, Disease
View Samples