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GSE15942
Rattus norvegicus
18 Downloadable Samples
Affymetrix Rat Expression 230A Array (rae230a)
Description
During neurogenesis, expression of the basic Helix-Loop-Helix NeuroD6/Nex1/MATH-2 transcription factor parallels neuronal differentiation, while maintaining the differentiated state in the mature nervous system. To further dissect NeuroD6 differentiation properties, we previously generated a NeuroD6-overexpressing stable PC12 cell line, PC12-ND6, which displays a neuronal phenotype characterized by spontaneous neuritogenesis, accelerated NGF-induced differentiation, and increased regenerative capacity. Furthermore, we reported that NeuroD6 promotes long-term neuronal survival upon oxidative stress triggered by serum deprivation. In this study, we identified the NeuroD6-mediated transcriptional regulatory pathways linking neuronal differentiation to survival, by conducting a genome-wide microarray analysis using PC12-ND6 cells and serum deprivation as a stress paradigm. Through a series of filtering steps and a gene-ontology analysis, we found that NeuroD6 promotes distinct but overlapping gene networks, consistent with the differentiation, regeneration, and survival properties of PC12-ND6 cells. Using a gene set enrichment analysis, we provide the first evidence of a compelling link between NeuroD6 and a set of heat shock proteins in the absence of stress, which may be instrumental to confer stress tolerance to PC12-ND6 cells. Immunocytochemistry results showed that HSP27 and HSP70 interact with cytoskeletal elements, consistent with their roles in neuritogenesis and preserving cellular integrity. HSP70 also colocalizes with mitochondria located in the soma, growing neurites and growth cones of PC12-ND6 cells prior to and upon stress stimulus, consistent with its neuroprotective functions. Collectively, our findings support the notion that NeuroD6 links neuronal differentiation to survival via the network of molecular chaperones and endows the cells with increased stress tolerance.
Publication Title
NeuroD6 genomic signature bridging neuronal differentiation to survival via the molecular chaperone network.
Sample Metadata Fields
Sex, Specimen part
View Samples- Homo sapiens
- 13 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Gene expression profiling of cultured skin fibroblasts obtained from patients affected with classical Ehlers Danlos syndrome (cEDS)
Publication Title
Molecular insights in the pathogenesis of classical Ehlers-Danlos syndrome from transcriptome-wide expression profiling of patients' skin fibroblasts.
Sample Metadata Fields
Specimen part, Disease
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Analysis of gene expression profiling of cultured skin fibroblasts obtained from patients affected with vascular Ehlers Danlos syndrome (vEDS)
Publication Title
Transcriptome analysis of skin fibroblasts with dominant negative COL3A1 mutations provides molecular insights into the etiopathology of vascular Ehlers-Danlos syndrome.
Sample Metadata Fields
Disease
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
To screen for candidate genes that may contribute to the pathogenesis of ATS
Publication Title
GLUT10 deficiency leads to oxidative stress and non-canonical αvβ3 integrin-mediated TGFβ signalling associated with extracellular matrix disarray in arterial tortuosity syndrome skin fibroblasts.
Sample Metadata Fields
Disease
View Samples- Homo sapiens
- 22 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Transcriptome-Wide Expression Profiling in Skin Fibroblasts of Patients with Joint Hypermobility Syndrome/Ehlers-Danlos Syndrome Hypermobility Type.
Sample Metadata Fields
Disease, Disease stage
View Samples- Homo sapiens
- 11 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
To unravel the molecular mechanisms potentially associated with the pathogenesis of the EDS-HT/JHS.
Publication Title
Transcriptome-Wide Expression Profiling in Skin Fibroblasts of Patients with Joint Hypermobility Syndrome/Ehlers-Danlos Syndrome Hypermobility Type.
Sample Metadata Fields
Disease, Disease stage
View Samples- Mus musculus
- 8 Downloadable Samples
- Affymetrix Mouse Gene 1.1 ST Array (mogene11st)
Description
In vitro studies identified TBC1D4 as an regulator of renal ion and water transporting proteins. However, TBC1D4-deficient mice did not show a defective renal salt and water homeostasis.
Publication Title
Rab-GAP TBC1D4 (AS160) is dispensable for the renal control of sodium and water homeostasis but regulates GLUT4 in mouse kidney.
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
To identify the true molecular features of the Ebf2+ cells, we performed microarray analysis of freshly sorted CD45-TER119-Ebf2+ and Ebf2- cells. This allowed for the detection of 1968 genes that were 2-fold differentially expressed in Ebf2+ and Ebf2- cells. Among these, 1075 genes were upregulated and 893 genes including Ebf2, were downregulated in the Ebf2- as compared to the Ebf2+ cells. These include Nov, Fmod, Ndn, Dcn, Ctgf, Angiopoietin like-1(Angptl1), Fn1 and Jag1, some of which has been reported to be expressed in culture-selected MSCs. Furthermore, consistent with antigen expression analysis by FACS, the Ebf2+ cells highly expressed transcripts of Pdgfra, Pdgfrb, Sca1/Ly6a, Thy1 and Itga7 and Itgav, that have been suggested to be linked to MSCs. Nestin was mainly expressed in the Ebf2+ cells whereas it was hardly detectable in the Ebf2- cells. Altogether, molecularly, the Ebf2+ cells displayed features of a MSC.
Publication Title
Molecular characterization of prospectively isolated multipotent mesenchymal progenitors provides new insight into the cellular identity of mesenchymal stem cells in mouse bone marrow.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 19 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Acute lymphoblastic leukemia (ALL) is an heterogeneous disease comprising several subentities that differ for both immunophenotypic and molecular characteristics. Over the years, the biologic understanding of this neoplasm has largely increased. Gene expression profiling has recently allowed to identify specific signatures for the different ALL subsets and permitted identification of pathways deregulated by a given lesion. MicroRNAs (miRNAs) are small non-coding RNAs which play a pivotal role in several cellular functions. In this study, we investigated miRNA and gene expression profiles in a series of adult ALL cases by microarray analysis and combined them by bioinformatic analysis. Interestingly, those miRNAs which are differentially expressed between the ALL classes accounted for a large proportion of miRNA/mRNA expression pairs identified by the above analysis. Moreover, the analysis highlighted several putative miRNA targets involved in apoptosis and cell-cycle regulation.
Publication Title
Characterization of B- and T-lineage acute lymphoblastic leukemia by integrated analysis of MicroRNA and mRNA expression profiles.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Mus musculus
- 28 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Expression profiling of normal NIH3T3 and transformed NIH3T3 K-ras cell lines grown for 72 hours in optimal glucose availability (25 mM glucose) or low glucose availability (1 mM). Low glucose induces apoptosis in transformed cells as compared to normal ones.
Publication Title
Oncogenic K-Ras decouples glucose and glutamine metabolism to support cancer cell growth.
Sample Metadata Fields
Cell line, Time
View Samples