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Rattus norvegicus
43 Downloadable Samples
Affymetrix Rat Expression 230A Array (rae230a)
Description
Neurodegenerative brain disorders become more common in the aged. Most of these disorders are associated with or caused by selective death of certain neuronal subpopulations. The mechanisms underlying the differential vulnerability of certain neuronal populations are still largely unexplored and few neuroprotective treatments are available to date. Elucidation of these mechanisms may lead to a greater understanding of the pathogenesis and treatment of neurodegenerative diseases. Moreover, preconditioning by a short seizure confers neuroprotection following a subsequent prolonged seizure. Our goal is to identify pathways that confer vulnerability and resistance to neurotoxic conditions by comparing the basal and preconditioned gene expression profiles of three differentially vulnerable hippocampal neuron populations.
Publication Title
Gene expression changes after seizure preconditioning in the three major hippocampal cell layers.
Sample Metadata Fields
No sample metadata fields
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GSE2880- Rattus norvegicus
- 62 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
Epilepsy is a major neurological disorder that affects approximately 1% of the population. The processes that lead to the development of epilepsy (epileptogenesis) are largely unknown. Levetiracetam is a novel antiepileptic drug (AED) that in the kindling model inhibits epileptogenesis in addition to being effective in controlling established epilepsy. The mechanisms of action of levetiracetam as an AED and an antiepileptogenic drug are unknown. By identifying the effect of chronic levetiracetam therapy on gene expression in the brain we hope to be able to identify genes that are involved in epileptogenesis. By comparing the gene expression profiles of levetiracetam and phenytoin treatments, we hope to be able to distinguish between genes that are important for the antiepileptic (anti-seizure) effect and genes that are important for the antiepileptogenic effect of levetiracetam. Phenytoin is a well-established AED; its mechanism of action involves inhibition of sodium channels. In contrast to levetiracetam, available data suggest that phenytoin in certain situations may enhance rather than inhibit the development of epilepsy.
Publication Title
Region-specific changes in gene expression in rat brain after chronic treatment with levetiracetam or phenytoin.
Sample Metadata Fields
No sample metadata fields
View Samples GSE1155- Rattus norvegicus
- 11 Downloadable Samples
- Affymetrix Rat Expression 230A Array (rae230a)
Description
The ketogenic diet (KD) is an anticonvulsant treatment that has been used to manage medically-intractable epilepsies. The KD requires 10-12 days to become maximally effective, suggesting that changes in gene expression are involved in its anticonvulsant action. Using the Affymetrix rat arrays (RAE230A), 6 control samples and 5 KD samples were run.
Publication Title
Mitochondrial biogenesis in the anticonvulsant mechanism of the ketogenic diet.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
Illumina Genome Analyzer IIx
Description
The expression level of a gene is often used as a proxy for determining whether the protein or RNA product is functional in a cell or tissue. Therefore, it is of fundamental importance to understand the global distribution of gene expression levels, and to be able to interpret it mechanistically and functionally. Here we use RNA sequencing of mouse Th2 cells, coupled with a range of other techniques, to show that all genes can be separated, based on their expression abundance, into two distinct groups: one group comprising of lowly expressed and putatively non-functional mRNAs, and the other of highly expressed mRNAs with active chromatin marks at their promoters. Similar observations are made in other data sets, including sources such as Drosophila. Overall design: RNA-seq data of two biological replicates of murine Th2 cells.
Publication Title
Single-cell RNA sequencing reveals T helper cells synthesizing steroids de novo to contribute to immune homeostasis.
Sample Metadata Fields
No sample metadata fields
View Samples SRP151720- Mus musculus
- 8 Downloadable Samples
- Illumina HiSeq 2500
Description
During development, changes in gene transcription are accompanied by changes in chromatin modification but the order and causality of events often remain unclear. Here we address this question using X-chromosome inactivation (XCI), which entails chromosome-wide gene silencing and heterochromatin formation. We initiate XCI in female, mouse embryonic stem cells by inducing Xist expression and monitor subsequent changes in transcription and chromatin modification by allele-specific TTseq and ChIPseq respectively. An unprecedented temporal resolution has enabled us to define early alterations in chromatin that are induced upon Xist RNA coating. Xist-induced repression begins with histone deacetylation, which involves the histone deacetylase HDAC3 and occurs before efficient loss of H3K4me3 and H3K4me1 modifications. Polycomb-associated repressive histone marks accumulate rapidly, starting with PRC1-associated H2AK119Ub and followed by PRC2-associated H3K27me3. However, polycomb accumulates initially at large premarked domains, some of which correspond to Xist entry sites, and then spreads into genes. We also show that spreading can only ensue when transcriptional silencing has occurred. These results establish a detailed epigenomic time course for XCI and reveal a hierarchy of events with chromatin playing an important role in transcriptional silencing of the X chromosome. Overall design: RNAseq on WT and HDAC3 KO cell lines from TX1072 cell line. For WT and HDAC3KO samples RNAseq in 2 replicates (Rep1, Rep2) at 2 different times of DOX induction (0h, 24h).
Publication Title
The Implication of Early Chromatin Changes in X Chromosome Inactivation.
Sample Metadata Fields
Cell line, Subject
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
Microarray gene expression profiling reveals that PHGDH inhibition by NCT-503 activates a metabolic stress response characterized by downregulation of cell cycle genes and induction of stress response genes.
Publication Title
Metabolic Reprogramming by MYCN Confers Dependence on the Serine-Glycine-One-Carbon Biosynthetic Pathway.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Homo sapiens
- 41 Downloadable Samples
- Illumina HiSeq 2500
Description
using RNA-seq we characterized gene expression changes occuring upon knockout of BAP1, ASXL1, ASXL2, ASXL1/2 or Polycomb genes RING1B and EZH2. We also investigated the response to retinoic acid treatment in wild-type and BAP1 KO cells. Overall design: Examination of transcript abundance in wild-type HAP1 cells and in 9 different HAP1-mutated cell lines as well as upon retinoic acid treatment in wild-type and BAP1 KO cells. Two biological replicated were performed for each condition.
Publication Title
BAP1 complex promotes transcription by opposing PRC1-mediated H2A ubiquitylation.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples- Homo sapiens
- 7 Downloadable Samples
- Affymetrix Human Gene 2.1 ST Array (hugene21st)
Description
HCT116 colon carcinoma cells invade more the basement membrane when carcinoma-associated fibroblasts (CAFs) are present. In order to identify if CAFs induce an invasive phenotype to HCT116 cells, and therefore regulate genes expression related to invasion, we compared gene expression of HCT116 cells cultured alone or in the presence of CAFs.
Publication Title
Cancer-associated fibroblasts induce metalloprotease-independent cancer cell invasion of the basement membrane.
Sample Metadata Fields
Disease, Cell line
View Samples- Homo sapiens
- 4 Downloadable Samples
- Illumina HiSeq 2500
Description
Characterization of gene expression changes occuring upon knockout of RING1A, RING1B, and BAP1. Overall design: Four Samples
Publication Title
BAP1 complex promotes transcription by opposing PRC1-mediated H2A ubiquitylation.
Sample Metadata Fields
Specimen part, Treatment, Subject
View Samples- Mus musculus
- 42 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
The macrophage-Brucella interaction is critical for the establishment of a chronic Brucella infection. Smooth virulent B. suis strain 1330 (S1330) prevents macrophage cell death. However, rough attenuated B. suis strain VTRS1 induces strong macrophage cell death. To further investigate the mechanism of VTRS1-induced macrophage cell death, microarrays were used to analyze temporal transcriptional responses of murine macrophage-like J774. A1 cells infected with S1330 or VTRS1.
Publication Title
Proinflammatory caspase-2-mediated macrophage cell death induced by a rough attenuated Brucella suis strain.
Sample Metadata Fields
Cell line, Treatment
View Samples