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GSE23349
Drosophila melanogaster, Homo sapiens
12 Downloadable Samples
Affymetrix Human Gene 1.0 ST Array (hugene10st), Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Abstract: Secretion occurs in all cells, with relatively low levels in most cells and extremely high levels in specialized secretory cells, such as those of the pancreas, salivary and mammary glands. Here, we report that the CrebA/Creb3-like family of bZip transcription factors functions to upregulate expression of both the general protein machinery required in all cells for secretion and of cell-type specific secreted proteins. Drosophila CrebA directly binds the enhancers of secretory pathway genes and is both necessary and sufficient to activate expression of every secretory pathway component gene examined thus far. Microarray profiling reveals that CrebA also upregulates expression of genes encoding cell type specific secreted components. Finally, we find that the human CrebA orthologues, Creb3L1 and Creb3L2, have the ability to upregulate the secretory pathway in non-secretory cell types.
Publication Title
The CrebA/Creb3-like transcription factors are major and direct regulators of secretory capacity.
Sample Metadata Fields
Cell line, Treatment
View Samples- Drosophila melanogaster
- 6 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Abstract: Secretion occurs in all cells, with relatively low levels in most cells and extremely high levels in specialized secretory cells, such as those of the pancreas, salivary and mammary glands. Here, we report that the CrebA/Creb3-like family of bZip transcription factors functions to upregulate expression of both the general protein machinery required in all cells for secretion and of cell-type specific secreted proteins. Drosophila CrebA directly binds the enhancers of secretory pathway genes and is both necessary and sufficient to activate expression of every secretory pathway component gene examined thus far. Microarray profiling reveals that CrebA also upregulates expression of genes encoding cell type specific secreted components. Finally, we find that the human CrebA orthologues, Creb3L1 and Creb3L2, have the ability to upregulate the secretory pathway in non-secretory cell types.
Publication Title
The CrebA/Creb3-like transcription factors are major and direct regulators of secretory capacity.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st), Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Abstract: Secretion occurs in all cells, with relatively low levels in most cells and extremely high levels in specialized secretory cells, such as those of the pancreas, salivary and mammary glands. Here, we report that the CrebA/Creb3-like family of bZip transcription factors functions to upregulate expression of both the general protein machinery required in all cells for secretion and of cell-type specific secreted proteins. Drosophila CrebA directly binds the enhancers of secretory pathway genes and is both necessary and sufficient to activate expression of every secretory pathway component gene examined thus far. Microarray profiling reveals that CrebA also upregulates expression of genes encoding cell type specific secreted components. Finally, we find that the human CrebA orthologues, Creb3L1 and Creb3L2, have the ability to upregulate the secretory pathway in non-secretory cell types.
Publication Title
The CrebA/Creb3-like transcription factors are major and direct regulators of secretory capacity.
Sample Metadata Fields
Cell line, Treatment
View Samples- Homo sapiens
- 5 Downloadable Samples
Affymetrix Human Exon 1.0 ST Array [probe set (exon) version (huex10st)
Description
MiR-142 is upregulated in neurons in HIV and SIV encephalitis. We have created stable clones of the BE(2)M17 human neuroblastoma cell line overexpressing miR-142.
Publication Title
MicroRNA-142 reduces monoamine oxidase A expression and activity in neuronal cells by downregulating SIRT1.
Sample Metadata Fields
Cell line
View Samples- Drosophila melanogaster
- 5 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
FoxA transcription factors play major roles in organ-specific gene expression. How FoxA proteins achieve specificity is unclear, given their broad expression patterns and requirements in multiple cell types. Here, we characterize Sage, a basic helix-loop-helix (bHLH) transcription factor expressed exclusively in the Drosophila salivary gland (SG). We identify Sage targets and show that not only are both Sage and the single Drosophila FoxA protein, Fork head (Fkh), required for expression of these genes, but coexpression of Sage and Fkh is sufficient to drive target gene expression in multiple other cell types. Sage and Fkh drive expression of the bZip transcription factor Senseless (Sens), which boosts expression of Sage/Fkh targets. Importantly, Sage, Fkh and Sens colocalize on salivary gland polytene chromosomes. Thus, Fkh drives cell-type specific gene expression as part of a tissue-specific transcription module that includes Sage and Sens, providing a new paradigm for how mammalian FoxA proteins acheive specificity.
Publication Title
Organ-specific gene expression: the bHLH protein Sage provides tissue specificity to Drosophila FoxA.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 218 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Investigation of gene expression profiles among patients with COPD frequent exacerbations and to find gene targets as predictors of exacerbations
Publication Title
Altered gene expression in blood and sputum in COPD frequent exacerbators in the ECLIPSE cohort.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Drosophila melanogaster
- 52 Downloadable Samples
Illumina HiSeq 2000
Description
We investigate the biological effects of radiation using Drosophila Melanogaster as a model organism, focusing on gene expression and lifespan analysis to determine the effect of different radiation doses. Our results support a threshold effect in response to radiation: no effect on lifespan and no permanent effect on gene expression is seen at doses below 10,000 Roentgens. Overall design: Adult male Drosophila were irradiated 2 days after eclosion, with one of 6 radiation doses: 10; 1,000; 5,000; 10,000; 20,000 Roentgens. Samples were taken at 3 time points (2, 10 and 20 days post-irradiation).
Publication Title
Drosophila melanogaster show a threshold effect in response to radiation.
Sample Metadata Fields
Specimen part, Subject
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133A Array (hgu133a)
Description
Differential gene expression analysis of oesophageal cells stimulated with a low pH environment. Study designed to identify pathways involved in progression of gastro-oesophageal reflux disease through Barrett's oesophagus to adenocarcinoma. Identified many subsets of genes with involvement in pathogenesis.
Publication Title
Low pH induces co-ordinate regulation of gene expression in oesophageal cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 57 Downloadable Samples
- Illumina HiSeq 2500
Description
RNA-seq analysis from young and pre-glaucomatous DBA/2J retinal ganglion cells and control (age and sex-matched, D2-Gpnmb+) retinal ganglion cells Overall design: Retinal ganglion cell mRNA from 4 month (young) and 9 month (pre-glaucomatous) DBA/2J mice and age and sex-matched D2-Gpnmb+ controls
Publication Title
Nicotinamide and WLD<sup>S</sup> Act Together to Prevent Neurodegeneration in Glaucoma.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples- Macaca mulatta
- 48 Downloadable Samples
- Affymetrix Human Genome U95 Version 2 Array (hgu95av2)
Description
The etiology of the central nervous system (CNS) alterations after human immunodeficiency virus (HIV) infection, such as dementia and encephalitis, remains unknown. We have used microarray analysis in a monkey model of neuroAIDS to identify 98 genes, many previously unrecognized in lentiviral CNS pathogenesis, whose expression is significantly up-regulated in the frontal lobe of simian immunodeficiency virus-infected brains. Further, through immunohistochemical illumination, distinct classes of genes were found whose protein products localized to infiltrating macrophages, endothelial cells and resident glia, such as CD163, Glut5, and ISG15. In addition we found proteins induced in cortical neurons (ie, cyclin D3, tissue transglutaminase, 1-antichymotrypsin, and STAT1), which have not previously been described as participating in simian immunodeficiency virus or HIV-related CNS pathology. This molecular phenotyping in the infected brains revealed pathways promoting entry of macrophages into the brain and their subsequent detrimental effects on neurons. These data support the hypothesis that in HIV-induced CNS disease products of activated macrophages and astrocytes lead to CNS dysfunction by directly damaging neurons, as well as by induction of altered gene and protein expression profiles in neurons themselves which are deleterious to their function.
Publication Title
Induction of pathogenic sets of genes in macrophages and neurons in NeuroAIDS.
Sample Metadata Fields
No sample metadata fields
View Samples