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GSE15398
Homo sapiens
27 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
For more than a decade, microarrays have been a powerful and widely used tool to explore the transcriptome of biological systems. However, the amount of biological material from cell sorting or laser capture microdissection is much too small to perform microarray studies. To address this issue, RNA amplification methods have been developed to generate sufficient targets from picogram amounts of total RNA to perform microarray hybridisation. In this study, four commercial protocols for amplification of picograms amounts of input RNA for microarray expression profiling were evaluated and compared. The quantitative and qualitative performances of the methods were assessed. Microarrays were hybridised with the amplified targets and the amplification protocols were compared with respect to the quality of expression profiles, reproducibility within a concentration range of input RNA, and sensitivity.
Publication Title
Evaluation of methods for amplification of picogram amounts of total RNA for whole genome expression profiling.
Sample Metadata Fields
No sample metadata fields
View Samples- Rattus norvegicus
- 21 Downloadable Samples
- Affymetrix Rat Expression 230A Array (rae230a)
Description
Modulation of several waves of gene expression during FGF-1 induced Epithelial-mesenchymal transition of carcinoma cells . In vitro FGF-1 induced EMT study using NBTII rat bladder carcinoma cells
Publication Title
Modulation of several waves of gene expression during FGF-1 induced epithelial-mesenchymal transition of carcinoma cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 351 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Transcriptome analysis of Wnt3a-treated triple-negative breast cancer cells.
Sample Metadata Fields
Cell line
View Samples- Homo sapiens
- 176 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Transcriptome analysis of 130 breast cancer samples (41 TNBC; 30 Her2; 30 Luminal B and 29 Luminal A), 11 normal breast tissue samples and 14 TNBC cell lines.
Publication Title
Transcriptome analysis of Wnt3a-treated triple-negative breast cancer cells.
Sample Metadata Fields
Cell line
View Samples- Homo sapiens
- 175 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Transcriptome analysis of 130 breast cancer samples (41 TNBC; 30 Her2; 30 Luminal B and 29 Luminal A), 11 normal breast tissue samples and 14 TNBC cell lines.
Publication Title
Transcriptome analysis of Wnt3a-treated triple-negative breast cancer cells.
Sample Metadata Fields
Cell line
View Samples- Homo sapiens
- 35 Downloadable Samples
- Affymetrix Human Gene 1.1 ST Array (hugene11st)
Description
We analyzed the transcriptome of two different triple negative breast cancer (TNBC) cell lines to define a comprehensive list of Wnt target genes. Cells were treated with Wnt3a for 6h, 12h or 24h. We found up-regulated and down-regulated genes in response to Wnt3a treatment. They are involved in the Wnt pathway itself, and also in TGF, p53 and Hedgehog pathways. Thorough characterization of these novel potential Wnt target genes may reveal new regulators of the canonical Wnt pathway. The comparison of our list of Wnt target genes with those published in other cellular contexts confirms the notion that Wnt target genes are tissue-, cell line- and treatment-specific.
Publication Title
Transcriptome analysis of Wnt3a-treated triple-negative breast cancer cells.
Sample Metadata Fields
Cell line
View Samples- Danio rerio
- 12 Downloadable Samples
- Affymetrix Zebrafish Genome Array (zebrafish)
Description
Purpose: Investigate the molecular determinants of retinal regeneration in adult vertebrates by analyzing the gene expression profiles of control and post-lesion retina of adult zebrafish, a system that regenerates following injury.
Publication Title
Gene expression profiles of intact and regenerating zebrafish retina.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 140 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
The distinction between primary and secondary ovarian tumors may be challenging for pathologists.
Publication Title
A genomic and transcriptomic approach for a differential diagnosis between primary and secondary ovarian carcinomas in patients with a previous history of breast cancer.
Sample Metadata Fields
Specimen part, Disease stage
View Samples- Drosophila melanogaster
- 26 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Low-oxygen tolerance is supported by an adaptive response that includes a coordinate shift in metabolism and the activation of a transcriptional program that is driven by the hypoxia-inducible factor (HIF) pathway. The precise contribution of HIF-1 in the adaptive response, however, has not been determined. Here we investigate how HIF-1 influences hypoxic adaptation throughout Drosophila development. We find that hypoxic-induced transcriptional changes are comprised of HIF-dependent and HIF-independent pathways that are distinct and separable. We show that normoxic set-points of carbohydrate metabolites are significantly altered in dHIF mutants and that these animals are unable to mobilize glycogen in hypoxia. Furthermore, we find that the estrogen-related receptor (dERR), which is a global regulator of aerobic glycolysis in larvae, is required for a competent hypoxic response. dERR binds to dHIF and participates in the HIF-dependent transcriptional program in hypoxia. In addition, dERR acts in the absence of dHIF in hypoxia and a significant portion of HIF-independent transcriptional responses can be attributed to dERR actions, including upregulation of glycolytic transcripts. These results indicate that competent hypoxic responses arise from complex interactions between HIF-dependent and -independent mechanisms, and that dERR plays a central role in both of these programs.
Publication Title
HIF- and non-HIF-regulated hypoxic responses require the estrogen-related receptor in Drosophila melanogaster.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 23 Downloadable Samples
- Affymetrix Mouse Expression 430A Array (moe430a)
Description
Aging and neurodegeneration are often accompanied by a functionally impaired ubiquitin-proteasome system (UPS). In tauopathies and polyglutamine diseases a mutant form of Ubiquitin B, UBB+1, accumulates in disease-specific aggregates. UBB+1 mRNA is generated at low levels in vivo during transcription from the Ubiquitin B locus by molecular misreading. The resulting mutant protein has been shown to inhibit proteasome function. To elucidate causative effects and neuropathological consequences of UBB+1 accumulation, we used a UBB+1 expressing transgenic mouse line, that models UPS inhibition in neurons and exhibits behavioral phenotypes reminiscent of Alzheimers disease (AD). In order to reveal affected organs and functions, young and aged UBB+1 transgenic mice were comprehensively phenotyped for more than 240 parameters. This revealed unexpected changes in spontaneous breathing patterns and an altered response to hypoxic conditions. Our findings point to a central dysfunction of respiratory regulation in transgenic mice in comparison to wildtype littermate mice. Accordingly, UBB+1 was strongly expressed in brainstem regions of transgenic mice controlling respiration. These regions included, for example, the medial part of the nucleus of the tractus solitarius and the lateral subdivisions of the parabrachial nuclei. In addition, UBB+1 was also strongly expressed in these anatomical structures of AD patients (Braak stage #6) and was not expressed in non-demented controls. We conclude that long-term UPS inhibition due to UBB+1 expression causes central breathing dysfunction in a transgenic mouse model of AD. The UBB+1 expression pattern in humans is consistent with the contribution of bronchopneumonia as a cause of death in AD patients.
Publication Title
Long-term proteasomal inhibition in transgenic mice by UBB(+1) expression results in dysfunction of central respiration control reminiscent of brainstem neuropathology in Alzheimer patients.
Sample Metadata Fields
No sample metadata fields
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