We used Affymetrix HG U133 Plus 2.0 GeneChips to compare the transcriptome of miR-145-overexpressing MDA-MB-231 cells against negative control miRNA precursor-transfected cells.
miR-145-dependent targeting of junctional adhesion molecule A and modulation of fascin expression are associated with reduced breast cancer cell motility and invasiveness.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The transcriptional programme controlled by Runx1 during early embryonic blood development.
Specimen part, Cell line
View SamplesTranscription factors have long been recognised as powerful regulators of mammalian development, yet it is largely unknown how individual key regulators operate within wider regulatory networks. Here we have used a combination of global gene expression and chromatin-immunoprecipitation approaches across four ES-cell-derived populations of increasing haematopoietic potential to define the transcriptional programme controlled by Runx1, an essential regulator of blood cell specification. Integrated analysis of these complementary genome-wide datasets allowed us to construct a global regulatory network model, which suggested that core regulatory circuits are activated sequentially during blood specification, but will ultimately collaborate to control many haematopoietically expressed genes. Using the CD41/integrin alpha 2b gene as a model, cellular and in vivo studies showed that CD41 is controlled by both early and late circuits in fully specified blood cells, but initiation of CD41 expression critically depends on a later subcircuit driven by Runx1. Taken together, this study represents the first global analysis of the transcriptional programme controlled by any key haematopoietic regulator during the process of early blood cell specification. Moreover, the concept of interplay between sequentially deployed core regulatory circuits is likely to represent a design principle widely applicable to the transcriptional control of mammalian development.
The transcriptional programme controlled by Runx1 during early embryonic blood development.
Specimen part, Cell line
View SamplesEnteroendocrine L-cells release hormones that control metabolism and appetite and are targets under investigation for the treatment of diabetes and obesity. Understanding L-cell diversity and expression profiles is critical for identifying target receptors that will translate into altered hormone secretion. We performed single cell RNA sequencing of mouse L-cells from the upper small intestine to distinguish cellular populations, revealing that L-cells form 3 major clusters: a group with typical characteristics of classical L-cells, including high expression of Gcg and Pyy; a cell type overlapping with Gip-expressing K-cells; and a unique cluster expressing Tph1 and Pzp that was predominantly located in duodenal villi and co-produced 5HT. Expression of G-protein coupled receptors differed between clusters, suggesting the cell types are differentially regulated, and would be differentially targetable. Our findings support the emerging concept that many enteroendocrine cell populations are highly overlapping, with individual cells producing a range of peptides previously assigned to distinct cell types. Overall design: Single cell RNA sequencing of mouse duodenal L-cells cells
Single-cell RNA-sequencing reveals a distinct population of proglucagon-expressing cells specific to the mouse upper small intestine.
Specimen part, Subject
View SamplesWe used Affymetrix HG U133 Plus 2.0 GeneChips to compare the transcriptome of HS3ST2-transfected and control vector-transfected MDA-MB-231 cells.
HS3ST2 modulates breast cancer cell invasiveness via MAP kinase- and Tcf4 (Tcf7l2)-dependent regulation of protease and cadherin expression.
Specimen part, Cell line
View SamplesTo identify the molecular characterisitics of parallel lineage-biased MPP populations arising from hematopoietic stem cells (HSC) we conducted genome-wide analyses of hematopoietic stem, progenitor and mature myeloid cell populations using Affymetrix Gene ST1.0 arrays.
Functionally Distinct Subsets of Lineage-Biased Multipotent Progenitors Control Blood Production in Normal and Regenerative Conditions.
Specimen part
View SamplesWe compared gene expression differences in Lyl-1 knockout vs wildtype LMPPs
The transcription factor Lyl-1 regulates lymphoid specification and the maintenance of early T lineage progenitors.
Specimen part
View SamplesTo determine the role of Mbd3/NuRD in lymphopoiesis, gene expression in purified populations of Mbd3-deleted and control lymphoid progenitor cells was analysed using RNA-seq. Overall design: Mbd3-deficient and control lymphoid progenitors were isolated from mouse bone marrow by flow cytometry, including haematopoietic stem cells (HSCs), lymphoid-primed multipotent progenitors (LMPPs), all-lymphoid progenitors (ALPs) and B cell-biased lymphoid progenitors (BLPs). RNA-seq was performed on 100 HSCs or 150 cells from the other populuations, using the previously described smartseq2 protocol for RNA-seq of small numbers of cells (Picelli et al. (2014) Nature protocols 9:171).
Mbd3/NuRD controls lymphoid cell fate and inhibits tumorigenesis by repressing a B cell transcriptional program.
Sex, Age, Specimen part, Cell line, Subject
View SamplesSingle cell RNA Seq and bioinformatic analysis are used to study what processes are important for the molecular reprogramming of GMPs after 5-FU treatment. Samples were collected at different time points (0, 8, 10, 12 and 14 days post treatment) Overall design: Single cell RNA sequencing of GMP cells upon 5-FU treatment
Myeloid progenitor cluster formation drives emergency and leukaemic myelopoiesis.
Specimen part, Cell line, Treatment, Subject, Time
View SamplesSoil salinity increasingly causes crop losses worldwide. Although roots are the primary targets of salt stress, the signaling networks that facilitate metabolic reprogramming to induce stress tolerance are less understood than those in leaves. Here, a combination of transcriptomic and metabolic approaches was performed in salt-treated Arabidopsis thaliana roots, which revealed that the group S1 basic leucine zipper transcription factors bZIP1 and bZIP53 reprogram primary C- and N-metabolism. In particular, gluconeogenesis and amino acid catabolism are affected by these transcription factors. Importantly, bZIP1 expression reflects cellular stress and energy status in roots. In addition to the well-described abiotic stress response pathway initiated by the hormone abscisic acid (ABA) and executed by SnRK2 (Snf1-RELATED-PROTEIN-KINASE2) and AREB-like bZIP factors, we identify a structurally related ABA-independent signaling module consisting of SnRK1s and S1 bZIPs. Crosstalk between these signaling pathways recruits particular bZIP factor combinations to establish at least four distinct gene expression patterns. Understanding this signaling network provides a framework for securing future crop productivity.
Crosstalk between Two bZIP Signaling Pathways Orchestrates Salt-Induced Metabolic Reprogramming in Arabidopsis Roots.
Specimen part
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