This SuperSeries is composed of the SubSeries listed below.
Allelic exclusion of the immunoglobulin heavy chain locus is independent of its nuclear localization in mature B cells.
Specimen part
View SamplesThe IgH locus encodes for part of the antibody exposed by B cells and is important for the immune system. In B cells, one allele produces protein, the other must remain silenced. It was proposed that both alleles reside in different nuclear compartments and that this is important to maintain mono-allelic productivity. Here we challenge this concept. We provide detailed genome-wide contact maps, which show that IgH adopts different nuclear locations in immune versus other cells but also demonstrate that in B cells both alleles reside in the same environment. Nuclear positioning is therefore not important to maintain allelic exclusion.
Allelic exclusion of the immunoglobulin heavy chain locus is independent of its nuclear localization in mature B cells.
Specimen part
View SamplesMammalian genomes contain numerous DNA elements with potential transcription regulatory function but unknown target genes. We used transgenic, gain-of-function mice with an ectopic copy of the beta-globin locus control region (LCR) to better understand how regulatory elements dynamically search the genome for target genes. We find that the LCR samples a restricted nuclear sub-volume in which it forms preferential contacts with genes controlled by shared transcription factors. One contacted gene, betah1, located on another chromosome, is upregulated, providing genetic demonstration that mammalian enhancers can function between chromosomes. Upregulation is not pan-cellular but confined to selected jackpot cells significantly enriched for inter-chromosomal LCR-betah1 interactions. This implies that long-range DNA contacts are relatively stable and cell-specific and, when functional, cause variegated expression. We refer to this as spatial effect variegation (SEV). The data provide a dynamic and mechanistic framework for enhancer action, important for assigning function to the one- and three-dimensional structure of DNA.
Variegated gene expression caused by cell-specific long-range DNA interactions.
Specimen part, Disease
View SamplesComparative RNA profiling between tumor cells and their secreted extracellular vesicles. Results revealed enrichment in genes involved in cellular migration and metastasis in extracellular vesicles, in agreement with their role as mediators of tumor progression.
In Vivo imaging reveals extracellular vesicle-mediated phenocopying of metastatic behavior.
Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Common genetic variants modulate pathogen-sensing responses in human dendritic cells.
Sex, Age, Race, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The Cancer Cell Line Encyclopedia enables predictive modelling of anticancer drug sensitivity.
No sample metadata fields
View SamplesThe Cancer Cell Line Encyclopedia (CCLE) project is a collaboration between the Broad Institute, the Novartis Institutes for Biomedical Research and the Genomics Novartis Foundation to conduct a detailed genetic and pharmacologic characterization of a large panel of human cancer models
The Cancer Cell Line Encyclopedia enables predictive modelling of anticancer drug sensitivity.
No sample metadata fields
View SamplesThe NIH Roadmap Epigenomics Mapping Consortium aims to produce a public resource of epigenomic maps for stem cells and primary ex vivo tissues selected to represent the normal counterparts of tissues and organ systems frequently involved in human disease.
The NIH Roadmap Epigenomics Mapping Consortium.
Sex, Specimen part, Disease, Subject
View SamplesA reference collection of genome-wide transcriptional expression data for bioactive small molecules.
The Connectivity Map: using gene-expression signatures to connect small molecules, genes, and disease.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Initial genome sequencing and analysis of multiple myeloma.
Specimen part, Disease, Disease stage
View Samples