Recent advances in high density oligonucleotides microarray technology have brought solutions for molecular profiling of human samples at an unprecedented resolution. We mapped whole blood RNA from healthy volunteers and CD34+ from cytapheresis to Human Exon ST 1.0 microarrays. We compared mature blood cells samples with immature CD34+ samples and each of these compartiement with a broad panel of solid tissues. By scanning the expression of over one million known or predicted exons, transcripts such as INPP4B, NEDD9 CD74 and VAV3 were identified as alternatively transcribed between haematopoietic system and solid tissues. The very large combinatorial complexity conveyed by alternative splicing contributes to the specific functional properties of blood cells and haematopoietic stem cells. The gene expression profiles are freely accessible through a dynamic web atlas, providing to the medical and scientific community a simple mean to interrogate and visualize this reference dataset. Finally, the relevance and the precision provided by this exon expression map suggest that exon arrays may be a powerful tool to link specific peripheral whole blood exon signatures modifications to many diseases such as cancer or auto-immune disorders.
Expression map of the human exome in CD34+ cells and blood cells: increased alternative splicing in cell motility and immune response genes.
Specimen part
View SamplesRecent advances in high density oligonucleotides microarray technology have generated solutions for molecular profiling of human samples at an unprecedented resolution. We mapped whole blood RNA from healthy volunteers and CD34+ collected by cytapheresis from patients to Exon ST 1.0 microarray probing for most known and predicted human exons. Comparison with a broad panel of solid tissues showed that blood displayed the largest tissue specific signature. This unique expression profile comprised transcripts from every blood cell compartment. Moreover, by scanning the expression of over one million different exons, several transcripts were identified as alternatively transcribed between whole blood and solid tissues, or CD34+ and other tissues. The precision of this expression map, at the exon resolution, and the coverage of every blood cell type and hematopoietic stem cells suggest that it will be possible to link specific whole blood exon signatures to many diseases such as cancer or auto-immune disorders and to discover alternative splicing events specific of mature blood cells or stem cells compartment.
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View SamplesDifferential gene expression assessed in siTNF-OMe-P treated animals showed significant correlation between improved colon integrity and clinical parameters of colitis with reduced TLR activation, tissue regeneration and reduced pro-inflammatory cytokines, as compared to all treatment groups.
Functionally enhanced siRNA targeting TNFα attenuates DSS-induced colitis and TLR-mediated immunostimulation in mice.
Specimen part, Treatment
View SamplesMutants in the Drosophila gene lethal (3) malignant brain tumor cause malignant growth in the larval brain. This data shows the changes in gene expression profile associated to mutations in l(3)mbt, both in situ in third instar larval brains and in tumors cultured for 1 5 and 10 (T1, T5, T10) rounds of allograft culture
Ectopic expression of germline genes drives malignant brain tumor growth in Drosophila.
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The transcription factor GATA6 enables self-renewal of colon adenoma stem cells by repressing BMP gene expression.
Specimen part, Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
dKDM5/LID regulates H3K4me3 dynamics at the transcription-start site (TSS) of actively transcribed developmental genes.
Specimen part
View SamplesExcessive fat accumulation is a major risk factor for the development of type 2 diabetes.To determine the mechanisms by wich TP53INP2 regulates adipogenesis, gene expression profile was performed in TP53INP2-deficient 3T3-L1 cells at different stages of differentiation.
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Specimen part, Cell line, Time
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Specimen part, Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
dDsk2 regulates H2Bub1 and RNA polymerase II pausing at dHP1c complex target genes.
Cell line
View SamplesTo investigate the possible roles on mitotic/microtubule-related genes during hippocampal neuron differentiation, we dissected E18.5 mouse embryonic hippocampi, cultured neurons in vitro and collected total RNA samples from different timepoints of differentiation.
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Time
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