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GSE52139
Homo sapiens
16 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
There have been few studies that have focused on the periplaque regions surrounding demyelinated plaques, especially in spinal cords. Areas of incomplete demyelination have been demonstrated but poorly studied. The present study aimed to analyze the molecular immunopathology of periplaque demyelinated lesions (PDLs) in the spinal cord of patients with secondary progressive multiple sclerosis (MS).
Publication Title
Tissue remodeling in periplaque regions of multiple sclerosis spinal cord lesions.
Sample Metadata Fields
Sex, Specimen part
View Samples- Homo sapiens
- 8 Downloadable Samples
- Affymetrix Human Exon 1.0 ST Array [transcript (gene) version (huex10st)
Description
5-Fluorouracil (5-FU) is a widely used chemotherapeutic drug in colorectal cancer. Previous studies showed that 5-FU modulates RNA metabolism and mRNA expression. In addition, it has been reported that 5-FU incorporates into the RNAs constituting the translational machinery and that 5-FU affects the amount of some mRNAs associated with ribosomes. However, the impact of 5-FU on translational regulation remains unclear. Using translatome profiling, we report that a clinically relevant dose of 5-FU induces a translational reprogramming in colorectal cancer cell lines. Comparison of mRNA distribution between polysomal and non-polysomal fractions in response to 5-FU treatment using microarray quantification identified 313 genes whose translation was selectively regulated. These regulations were mostly stimulatory (91%). Among these genes, we showed that 5-FU increases the mRNA translation of HIVEP2, which encodes a transcription factor whose translation in normal condition is known to be inhibited by mir-155. In response to 5-FU, the expression of mir-155 decreases thus stimulating the translation of HIVEP2 mRNA. Interestingly, the 5-FU-induced increase in specific mRNA translation was associated with reduction of global protein synthesis. Altogether, these findings indicate that 5-FU promotes a translational reprogramming leading to the increased translation of a subset of mRNAs that involves at least for some of them, miRNA-dependent mechanisms. This study supports a still poorly evaluated role of translational control in drug response.
Publication Title
Translational reprogramming of colorectal cancer cells induced by 5-fluorouracil through a miRNA-dependent mechanism.
Sample Metadata Fields
Treatment
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Genome U133A Array (hgu133a)
Description
Background: microRNAs (miRNAs) are approximately 21 nucleotide non-coding transcripts capable of regulating gene expression. The most widely studied mechanism of regulation involves binding of the miRNA to a target mRNA, usually in its 3 untranslated region (UTR). As a result, translation of the target mRNA is inhibited and sometimes the mRNA itself can be de-stabilized. The inhibitory effects of miRNAs have been linked to many diverse cellular processes including malignant proliferation and apoptosis, development and differentiation, metabolic processes and neural plasticity. We asked whether endogenous fluctuations in a set of mRNA and miRNA profiles contain correlated changes that are statistically distinguishable from the many other fluctuations in the data set.
Publication Title
Detection of a microRNA signal in an in vivo expression set of mRNAs.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 8 Downloadable Samples
Illumina HiSeq 4000
Description
Neurons were made from H9 ESCs using a directed differentiation protocol in spinner flasks. After 86 DIV, cells were dissociated and run through the 10X Genomics Chromium single cell RNAseq platform.
Publication Title
No associated publication
Sample Metadata Fields
Sex, Age, Specimen part, Cell line
View Samples- Homo sapiens
- 60 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
We have sampled several tumour regions from nine clear cell renal cell carcinoma (ccRCC) patients to investigate intra-tumour heterogeneity.
Publication Title
Genomic architecture and evolution of clear cell renal cell carcinomas defined by multiregion sequencing.
Sample Metadata Fields
Sex, Age, Specimen part, Subject
View Samples- Homo sapiens
- 10 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
We have sampled several tumour regions from a single patient before and after everolimus treatment, including both primary and metastatic site samples to investigate intra-tumour heterogeneity.
Publication Title
No associated publication
Sample Metadata Fields
Age, Specimen part, Treatment
View Samples- Homo sapiens
- 9 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
We have sampled several tumour regions from a single ccRCC patient after 6 weeks everolimus treatment, including both primary and metastatic site samples to investigate intra-tumour heterogeneity.
Publication Title
No associated publication
Sample Metadata Fields
Age, Specimen part, Disease, Disease stage
View Samples- Mus musculus
- 2 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Drd2 regulates striatal gene networks.
Publication Title
Suppression of neuroinflammation by astrocytic dopamine D2 receptors via αB-crystallin.
Sample Metadata Fields
Specimen part
View Samples- Drosophila melanogaster
- 2 Downloadable Samples
- Illumina Genome Analyzer IIx
Description
Transcriptomic analysis of microRNA populations present within the developing wing and haltere appendage primordia of the model organism Drosophila melanogaster
Publication Title
No associated publication
Sample Metadata Fields
Sex, Specimen part, Cell line
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Transcriptome Array 2.0 (hta20)
Description
Comparison of skin samples (neck skin, non photoexposed) from aged women with various perceived age
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples