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GSE6497
Rattus norvegicus
15 Downloadable Samples
Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
Microarray analyses provide a powerful approach to identify gene expression alterations following kidney transplantation. However, the heterogeneity of human kidney transplant specimens and the variation in sample preparation precludes conclusions regarding the underlying mechanisms of the observed alterations. We used a well defined experimental rat kidney transplantation model with consistent transplant and sample preparation procedures to analyze genome wide changes in gene expression after syngeneic (sTX) and allogeneic transplantation (aTX) four days after transplantation. Both interventions were associated with dramatic changes in gene expression. Genes and Pathways related to immune response were extremely up regulated after aTX. Several of the up regulated genes have been described by other groups and we are able to proof this in one study. But several genes are reported for the first time to be up regulated in expression after renal aTX. The function of these genes in acute rejection process has to be evaluated. On the other hand the up regulation of regulatory or protective genes indicates that regulatory mechanism are activated after aTX trying to down regulate the immune response or protect the tissue against the immune system. The study is capable to serve as a representative study in aTX mediated gene expression by covering the known transcriptional changes reported by other groups and identification of novel markers and pathways. Further analysis of the duplicated datasets by other groups can help for a better understanding of the mechanisms mediated by acute rejection and thereby increase the therapeutic threatment.
Publication Title
Activation of counter-regulatory mechanisms in a rat renal acute rejection model.
Sample Metadata Fields
No sample metadata fields
View Samples- Drosophila melanogaster
- 377 Downloadable Samples
Illumina HiSeq 2000
Description
We sequenced mRNA from transverse slices of embryos from a variety of D. melanogaster mutants (bicoid over-expression, bicoid knockdown, hunchback knocdown, and zelda mutant) at the blastoderm stage to determine genome-wide patterns of gene expression. Overall design: mRNA from transverse sections of single D. melanogaster embryos mutant for patterning TFs was sequenced.
Publication Title
Genome-wide measurement of spatial expression in patterning mutants of <i>Drosophila melanogaster</i>.
Sample Metadata Fields
Specimen part, Subject
View Samples- Drosophila melanogaster
- 117 Downloadable Samples
- Illumina HiSeq 2000
Description
We sequenced mRNA from transverse slices of embryos at the blastoderm stage to determine genome-wide patterns of gene expression. Overall design: mRNA from transverse sections of single D. melanogaster embryos was sequenced
Publication Title
Sequencing mRNA from cryo-sliced Drosophila embryos to determine genome-wide spatial patterns of gene expression.
Sample Metadata Fields
Specimen part, Disease, Cell line, Subject
View Samples- Drosophila melanogaster
- 26 Downloadable Samples
- Illumina HiSeq 2000
Description
We sequenced mRNA according to several library prep protocols with known mixtures of two species of Drosophila in order to establish linear response in each protocol. Overall design: For each library prep protocol, mixtures with 0%, 5%, 10%, and 20% D. virilis total RNA was prepared, then libraries prepared according to instructions.
Publication Title
Low-cost, low-input RNA-seq protocols perform nearly as well as high-input protocols.
Sample Metadata Fields
Subject
View Samples- Mus musculus
- 16 Downloadable Samples
- Illumina Genome Analyzer IIx
Description
We report that TAF3, a TBP-associated core promoter factor, is highly enriched in ES cells. In addition to its role in the core promoter recognition complex TFIID, genome-wide binding studies reveal that TAF3 localizes to chromosomal regions bound by CTCF and cohesin. Enrichment for TAF3/CTCF/cohesin bound regions distinguishes TAF3-activated from TAF3-repressed genes. Our findings support a new role of TAF3 in mediating long-range chromatin regulatory interactions to safeguard the finely-balanced transcriptional programs that give rise to pluripotency. Overall design: Comparison of genome-wide expression patterns between TAF3-knockdown and WT embryonic stem cells using mRNA-Seq. Significantly differentially expressed protein-coding genes were identified by comparing control and knock-down samples at each timepoint (ES, embryoid body day 3 (EB3), EB6). Single and paired-end samples were combined at each timepoint, resulting in 3 tests for each gene (based on 8, 4, 4 independent measurements at ES ,EB3, EB6, respectively).
Publication Title
Control of embryonic stem cell lineage commitment by core promoter factor, TAF3.
Sample Metadata Fields
Specimen part, Cell line, Subject, Time
View Samples- Homo sapiens
- 8 Downloadable Samples
- IlluminaHiSeq2500
Description
We examined the effects of TNFa and Spt5, the major DSIF subunit, on nascent and mature transcripts using RNA-Seq of chromatin-associated and cytoplasmic transcripts. Overall design: RNA was extracted from the cytosolic and chromatin fractions of control and Spt5 KD cells that were treated with TNFa for 1 hour
Publication Title
Analysis of Subcellular RNA Fractions Revealed a Transcription-Independent Effect of Tumor Necrosis Factor Alpha on Splicing, Mediated by Spt5.
Sample Metadata Fields
No sample metadata fields
View Samples- Caenorhabditis elegans
- 6 Downloadable Samples
- Affymetrix C. elegans Genome Array (celegans)
Description
The Wnt signaling pathway plays a fundamental role during the development of metazoans, where it functions in the regulation of diverse processes including cell fate specification, cell migration, and stem cell renewal. Activation of the beta-catenin dependent or canonical Wnt signaling pathway upregulates expression of Wnt target genes to mediate an appropriate cellular response. In the nematode C. elegans, a Wnt signaling pathway similar to the canonical pathway regulates several processes during larval development, however few target genes of this pathway have been identified. To address this deficit, we conditionally activated Wnt signaling in living animals during a defined stage of larval life by expressing a dominant, activated beta-catenin protein, then used microarray analysis to identify genes showing altered expression compared to control animals. In this way we identified 166 differentially expressed genes, of which 104 were upregulated. A subset of the upregulated genes were validated by qPCR and showed altered expression in Wnt pathway mutants with decreased or increased Wnt signaling; we consider these genes to be candidate Wnt pathway targets in the C. elegans hermaphrodite larva. Amongst these was a group of 6 genes, including the cuticular collagen genes, bli-1 col-38, col-49 and col-71, that show a peak of expression in the mid L4 stage during normal development. The L4 expression of these genes suggests they may be expressed for use in the adult cuticle, and consistent with this, reduction of function for several of the genes leads to phenotypes suggestive of defects in cuticle function or integrity. Therefore this work has identified a large number of putative Wnt pathway target genes during larval life, including a small subset of Wnt-regulated collagen genes that may function in synthesis of the adult cuticle.
Publication Title
Use of an activated beta-catenin to identify Wnt pathway target genes in caenorhabditis elegans, including a subset of collagen genes expressed in late larval development.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 35 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
The present study reveals LMYC and MXD1 as novel regulators of a transcriptional program that is modulated during the maturation of Batf3-dependent dendritic cells (also known as type I classical dendritic cells or cDC1s).
Publication Title
The MYCL and MXD1 transcription factors regulate the fitness of murine dendritic cells.
Sample Metadata Fields
Specimen part
View Samples- Rattus norvegicus
- 20 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
Calyx of Held giant presynaptic terminals in the medial nucleus of the trapezoid body of the auditory brainstem form axosomatic synapses that have advanced to one of the best-studied synaptic system of the mammalian brain. As the auditory system matures and adjusts to high fidelity synaptic transmission, the calyx undergoes extensive structural and functional changes: it is formed around postnatal day 3 (P3), achieves immature function until hearing onset around P10 and can be considered mature from P21 onwards. This setting provides the unique opportunity to examine the repertoire of genes driving synaptic structure and function.
Publication Title
Gene expression profile during functional maturation of a central mammalian synapse.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 9 Downloadable Samples
- Affymetrix Murine Genome U74A Version 2 Array (mgu74av2)
Description
The aim of this study is to identify genes implicated in the early steps of the autoimmune process, prior to inflammation in type 1 diabetes. Early Insulin AutoAntibodies (E-IAA) have been used as subphenotypic marker to select individual animals as type 1 diabetes prone and to compare gene expression patterns with insulin autoantibody negative NOD.
Publication Title
Early over expression of messenger RNA for multiple genes, including insulin, in the Pancreatic Lymph Nodes of NOD mice is associated with Islet Autoimmunity.
Sample Metadata Fields
Age
View Samples