Pilot study: Observational clinical study
Aberrant connective tissue differentiation towards cartilage and bone underlies human keloids in African Americans.
Specimen part, Race, Subject
View SamplesThe cellular origin of Ewing tumor (ET), a tumor of bone or soft tissues characterized by specific fusions between EWS and ETS genes, is highly debated. Through gene expression analysis comparing ETs with a variety of normal tissues, we show that the profiles of different EWS-FLI1-silenced Ewing cell lines converge toward that of mesenchymal stem cells (MSC). Moreover, upon EWS-FLI1 silencing, two different Ewing cell lines can differentiate along the adipogenic lineage when incubated in appropriate differentiation cocktails. In addition, Ewing cells can also differentiate along the osteogenic lineage upon long-term inhibition of EWS-FLI1. These in silico and experimental data strongly suggest that the inhibition of EWS-FLI1 may allow Ewing cells to recover the phenotype of their MSC progenitor.
Mesenchymal stem cell features of Ewing tumors.
Specimen part
View SamplesTo understand the contribution of the poly(A)binding protein to the translation of specific mRNAs, we compared the ribosome occupancy of mRNAs in wild type Arabidopsis and pab2 pab8 double mutant seedlings. The mutants continue to express the PAB4 paralog of PABP.
The global translation profile in a ribosomal protein mutant resembles that of an eIF3 mutant.
Specimen part
View SamplesTo understand the contribution of the RPL24B protein, a component of the large 60S ribosomal subunit, to the translation of specific mRNAs, we compared the ribosome occupancy of mRNAs in wild type Arabidopsis and the rpl24b/stv1-1 T-DNA insertion mutant.
The global translation profile in a ribosomal protein mutant resembles that of an eIF3 mutant.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The global translation profile in a ribosomal protein mutant resembles that of an eIF3 mutant.
Age, Specimen part
View SamplesTo understand the contribution of the k subunit of eukaryotic transcription factor 3 (eif3k) to the translation of specific mRNAs, we compared the polysome loading states and overall transcript levels of wild type Arabidopsis and the eif3k T-DNA insertion mutant by Affymetrix arrays.
The global translation profile in a ribosomal protein mutant resembles that of an eIF3 mutant.
Age, Specimen part
View SamplesMitochondrial biogenesis is under the control of two different genetic systems: the nuclear genome (nDNA) and the mitochondrial genome (mtDNA). mtDNA is a circular genome of 16.6 kb encoding 13 of the approximately 90 subunits that form the respiratory chain, the remaining ones being encoded by the nuclear genome (nDNA). Eukaryotic cells are able to monitor and respond to changes in mitochondrial function through alterations in nuclear gene expression, a phenomenon first defined in yeast and known as retrograde regulation. With this experiment we aimed to identify the set of nuclear genes that significantly change their expression level in response to depletion of mtDNA.
How do human cells react to the absence of mitochondrial DNA?
Cell line
View SamplesTo understand the contribution of the k subunit of eukaryotic transcription factor 3 (eif3k) to the translation of specific mRNAs, we compared the polysome loading states and overall transcript levels of wild type Arabidopsis and the eif3k T-DNA insertion mutant by Affymetrix arrays.
The global translation profile in a ribosomal protein mutant resembles that of an eIF3 mutant.
Age, Specimen part
View SamplesExtremely slow growth imposed by energy limitation is a ubiquitous but poorly understood physiological state for microbes. We used oxygen limitation to impose this state on Pseudomonas aeruginosa and measured newly synthesized proteins using a time-selective proteome labeling method (BONCAT) to identify relevant regulators and metabolic pathways. We further characterized one upregulated protein that has no homology to any known protein domains. This small, acidic protein is post-transcriptionally regulated and physically interacts with RNA polymerase, binding near the secondary channel during transcription elongation, and leading to widespread effects on gene expression. For some genes, the impacts on transcript and protein levels are different, suggesting possible modulation of translation as well. These effects have phenotypic consequences, as deletion of the gene affects biofilm formation, secondary metabolite production, and fitness in fluctuating conditions. Based on these phenotypes, we have designated the protein SutA (survival under transitions). Overall design: Profiles of rRNA-depleted total RNA from WT, ?sutA (PA14_69770), and SutA-overexpressing cells grown late exponential phase in minimal medium containing pyruate as the carbon source, in triplicate
SutA is a bacterial transcription factor expressed during slow growth in Pseudomonas aeruginosa.
Cell line, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
A transcriptome analysis identifies molecular effectors of unconjugated bilirubin in human neuroblastoma SH-SY5Y cells.
Specimen part, Cell line, Treatment
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