Hsa-miR-500a-5p (miR500a) activity has been associated with breast cancer survival.
miR-500a-5p regulates oxidative stress response genes in breast cancer and predicts cancer survival.
Specimen part, Cell line
View SamplesThe aim of this study is to analyze the transcriptome of epithelial (CD326+ enriched) and immune (CD45+ enriched) fraction in Celiac Disease and controls to find differentially expressed genes.
The methylome of the celiac intestinal epithelium harbours genotype-independent alterations in the HLA region.
Sex, Age, Specimen part, Disease
View SamplesA subset of our SLNs would be upregulated by Nutlin-3 and down-regulated by 5-FU and that this differential regulation could potentially explain how cell fate choice is determined
ATM and MET kinases are synthetic lethal with nongenotoxic activation of p53.
Cell line, Treatment
View SamplesRNA was sequenced from individuals Disomic and Trisomic for chromosome 21 to identify consistent changes in gene expression across individuals Overall design: Cells were cultured at subconfluency and RNA harvested for sequencing
Trisomy 21 consistently activates the interferon response.
Sex, Age, Subject
View SamplesRNA was sequenced from Normal and DP 16 mice to identify consistent changes in gene expression across cohorts Overall design: Cells were cultured at subconfluency and RNA harvested for sequencing
Trisomy 21 consistently activates the interferon response.
Subject
View SamplesHuntington’s disease (HD) is a devastating neurological disorder that is caused by an expansion of the poly-Q tract in exon 1 of the Huntingtin gene (HTT). HTT is an evolutionarily conserved and ubiquitously expressed protein that has been linked to a variety of functions including transcriptional regulation, mitochondrial function, and vesicle transport. This large protein has numerous caspase and calpain cleavage sites and can be decorated with several post-translational modifications such as phosphorylations, acetylations, sumoylations, and palmitoylations. However, the exact function of HTT and the role played by its modifications in the cell is still not well understood. Scrutiny of HTT function has been focused on a single, full length, mRNA. In this study, we report the discovery of 5 novel HTT mRNA splice isoforms that are expressed in normal and HD-hESC lines as well as cortical neurons differentiated from hESCs. Interestingly, none of the novel isoforms generates a truncated protein. Instead, 4 of the 5 new isoforms specifically eliminate domains and modifications to generate smaller HTT proteins. The fifth novel isoform incorporates a previously unreported additional exon, dubbed 41b, which is hominid-specific and introduces a potential phosphorylation site in the protein. The discovery of this hominid-specific isoform may shed light on human-specific pathogenic mechanisms of HTT, which could not be investigated with current mouse models of the disease. Furthermore, it provides a new human-specific target for drug screening in Huntington’s disease. Overall design: We performed RNAseq of human embryonic stem cells in pluripotency conditions to check expression of multiple HTT isoforms.
Discovery of novel isoforms of huntingtin reveals a new hominid-specific exon.
No sample metadata fields
View SamplesThe study evaluates potential protective effects of cerium oxide nanoparticles (nanoceria) against oxidative stress in muscle tissue, both on ground and in space
Modulation of gene expression in rat muscle cells following treatment with nanoceria in different gravity regimes.
Specimen part, Cell line, Treatment
View SamplesMass populations of thyrocytes stably expressing wild type RET/PTC1 oncogene or RET/PTC1 carrying Y451F mutation and parental thyrocytes were used for hybridization on Affymetrix HG-U133A and HG-U133B chips. For each cell condition were generated two different targets (indicated as two different samples in the database, i.e. "Parental Thyrocytes" and "Parental Thyrocytes bis")for a total number of six samples. For the data analysis the two samples from the same condition (i.e. Parental thyrocytes) were considered as duplicates.
Induction of a proinflammatory program in normal human thyrocytes by the RET/PTC1 oncogene.
Specimen part
View SamplesCellular stress responses can be activated following functional defects in organelles such as mitochondria and the endoplasmic reticulum. Mitochondrial dysfunction caused by loss of the serine protease HtrA2 leads to a progressive movement disorder in mice and has been linked to parkinsonian neurodegeneration in humans. Here we demonstrate that loss of HtrA2 results in transcriptional up-regulation of nuclear genes characteristic of the integrated stress response, including the transcription factor CHOP, selectively in the brain. We also show that loss of HtrA2 results in the accumulation of unfolded proteins in the mitochondria, defective mitochondrial respiration and enhanced production of reactive oxygen species that contribute to the induction of CHOP expression and to neuronal cell death. CHOP expression is also significantly increased in Parkinsons disease patients brain tissue. We therefore propose that this brain-specific transcriptional response to stress may be important in the advance of neurodegenerative diseases.
Mitochondrial dysfunction triggered by loss of HtrA2 results in the activation of a brain-specific transcriptional stress response.
No sample metadata fields
View SamplesCellular stress responses can be activated following functional defects in organelles such as mitochondria and the endoplasmic reticulum. Mitochondrial dysfunction caused by loss of the serine protease HtrA2 leads to a progressive movement disorder in mice and has been linked to parkinsonian neurodegeneration in humans. Here we demonstrate that loss of HtrA2 results in transcriptional up-regulation of nuclear genes characteristic of the integrated stress response, including the transcription factor CHOP, selectively in the brain. We also show that loss of HtrA2 results in the accumulation of unfolded proteins in the mitochondria, defective mitochondrial respiration and enhanced production of reactive oxygen species that contribute to the induction of CHOP expression and to neuronal cell death. CHOP expression is also significantly increased in Parkinsons disease patients brain tissue. We therefore propose that this brain-specific transcriptional response to stress may be important in the advance of neurodegenerative diseases.
Mitochondrial dysfunction triggered by loss of HtrA2 results in the activation of a brain-specific transcriptional stress response.
No sample metadata fields
View Samples