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GSE7820
Saccharomyces cerevisiae
12 Downloadable Samples
Affymetrix Yeast Genome S98 Array (ygs98)
Description
In response to limited nitrogen and abundant carbon sources, diploid Saccharomyces cerevisiae strains undergo a filamentous transition in cell growth as part of pseudohyphal differentiation. Use of the disaccharide maltose as the principal carbon source, in contrast to the preferred nutrient monosaccharide glucose, has been shown to induce a hyper-filamentous growth phenotype in a strain deficient for GPA2 which codes for a Galpha protein component that interacts with the glucose-sensing receptor Gpr1p to regulate filamentous growth. In this report, we compare the global transcript and proteomic profiles of wild-type and Gpa2p deficient diploid yeast strains grown on both rich and nitrogen starved maltose media. We find that deletion of GPA2 results in significantly different transcript and protein profiles when switching from rich to nitrogen starvation media. The results are discussed with a focus on the genes associated with carbon utilization, or regulation thereof, and a model for the contribution of carbon sensing/metabolism-based signal transduction to pseudohyphal differentiation is proposed.
Publication Title
Transcript and proteomic analyses of wild-type and gpa2 mutant Saccharomyces cerevisiae strains suggest a role for glycolytic carbon source sensing in pseudohyphal differentiation.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 960 Downloadable Samples
- Illumina HumanRef-8 v3.0 expression beadchip
Description
Statins reduce cardiovascular disease risk by lowering plasma low density lipoprotein (LDL)-cholesterol. To identify novel pathways that modulate statin response, we assessed the influence of simvastatin exposure on expression quantitative trait locus (eQTL) associations across the genome in 480 lymphoblastoid cell lines (LCLs). Cell lines were derived blood samples collected ant entry visit from participants in the Cholesterol and Pharmacogenomics (CAP) trial, who underwent a 6 week 40mg/day simvastatin trial. We identified 4590 cis-eQTLS that were independent of treatment status (FDR=1%) and six cis-eQTLS for which there was evidence of an interaction with treatment (FDR=20%). Genotypes and Phenotypes derived from these indivudals are available through dbGaP (Accession Number). eQTL results are available at: http://eqtl.uchicago.edu/cgi=bin/gbrowse/eqtl/
Publication Title
HNRNPA1 regulates HMGCR alternative splicing and modulates cellular cholesterol metabolism.
Sample Metadata Fields
Sex, Subject
View Samples- Mus musculus
- 46 Downloadable Samples
- Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2)
Description
We performed affymetrix gene expression profiling on mammary tumors from eight well-characterized genetically engineered Mouse (GEM) models of human breast cancer.
Publication Title
Integrated miRNA and mRNA expression profiling of mouse mammary tumor models identifies miRNA signatures associated with mammary tumor lineage.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 4 Downloadable Samples
Illumina Genome Analyzer II
Description
MicroRNAs (miRNAs) are a class of small RNA molecules that regulate expression of specific mRNA targets. They can be released from cells, often encapsulated within extracellular vesicles (EVs), and therefore have the potential to mediate intercellular communication. It has been suggested that certain miRNAs may be selectively exported, although the mechanism has yet to be identified. Manipulation of the miRNA content of EVs will be important for future therapeutic applications. We therefore wished to assess which endogenous miRNAs are enriched in EVs and how effectively an overexpressed miRNA would be exported. Small RNA libraries from HEK293T cells and vesicles before or after transfection with a vector for miR-146 overexpression were analysed by deep sequencing. A subset of miRNAs was found to be enriched in EVs. The global expression data provided by deep sequencing confirms that specific miRNAs are enriched in EVs released by HEK293T cells. Overall design: Cells were transfected with a plasmid to direct overexpression of miR-146a. Extracellular vesicles were isolated by ultracentrifugation from untreated and transfected cells. RNA was isolated from one sample each of untreated and transfected cells and vesicles.Small RNA libraries were prepared for sequencing.
Publication Title
Selective extracellular vesicle-mediated export of an overlapping set of microRNAs from multiple cell types.
Sample Metadata Fields
Specimen part, Subject
View Samples- Drosophila melanogaster
- 140 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Suboptimal evolutionary novel environments promote singular altered gravity responses of transcriptome during Drosophila metamorphosis.
Sample Metadata Fields
Sex, Age
View Samples- Homo sapiens
- 68 Downloadable Samples
- Affymetrix Human X3P Array (u133x3p), Affymetrix Human Genome U95 Version 2 Array (hgu95av2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Differentially expressed genes regulating the progression of ductal carcinoma in situ to invasive breast cancer.
Sample Metadata Fields
Specimen part, Disease, Disease stage
View Samples- Drosophila melanogaster
- 90 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Genome-wide transcriptional profiling showed that reducing gravity levels in the International Space Station (ISS) causes important alterations in Drosophila gene expression intimately linked to imposed spaceflight-related environmental constrains during Drosophila metamorphosis. However, simulation experiments on ground testing space-related environmental constraints, show differential responses. Curiously, although particular genes are not common in the different experiments, the same GO groups including a large multigene family related with behavior, stress response and organogenesis are over represented in them. A global and integrative analysis using the gene expression dynamics inspector (GEDI) self-organizing maps, reveals different degrees in the responses of the transcriptome when using different environmental conditions or microgravity/hypergravity simulation devices
Publication Title
Suboptimal evolutionary novel environments promote singular altered gravity responses of transcriptome during Drosophila metamorphosis.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 38 Downloadable Samples
Affymetrix Human X3P Array (u133x3p), Affymetrix Human Genome U95 Version 2 Array (hgu95av2)
Description
We used gene expression profiling of human DCIS and IBC to discover uniquely expressed genes that may also regulate progression.
Publication Title
Differentially expressed genes regulating the progression of ductal carcinoma in situ to invasive breast cancer.
Sample Metadata Fields
Specimen part, Disease, Disease stage
View Samples- Homo sapiens
- 24 Downloadable Samples
- Affymetrix Human Transcriptome Array 2.0 (hta20)
Description
We used microarrays to detail the global program of gene expression during early hESC differentiation to mesendoderm using FBS, with and without RUNX1 depletion.
Publication Title
Transient RUNX1 Expression during Early Mesendodermal Differentiation of hESCs Promotes Epithelial to Mesenchymal Transition through TGFB2 Signaling.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Homo sapiens
- 17 Downloadable Samples
- Affymetrix Human Genome U95 Version 2 Array (hgu95av2), Affymetrix Human X3P Array (u133x3p)
Description
We used gene expression profiling of human DCIS and IBC to discover uniquely expressed genes that may also regulate progression.
Publication Title
Differentially expressed genes regulating the progression of ductal carcinoma in situ to invasive breast cancer.
Sample Metadata Fields
Specimen part, Disease, Disease stage
View Samples