Snapshot of translation in mammalian cells that are depleted of polyamines or replete with polyamines. Hek293T cells treated with DFMO or Spermidine. Overall design: DFMO vs. Spermidine treatment
Polyamine Control of Translation Elongation Regulates Start Site Selection on Antizyme Inhibitor mRNA via Ribosome Queuing.
Disease, Treatment, Subject
View SamplesWe used microarrays to expression profile peripheral blood mononuclear cells (PBMCs) from LGL leukemia patients and control subjects to identify survival pathways that render leukemic LGL resistant to activation induced cell death.
Molecular profiling of LGL leukemia reveals role of sphingolipid signaling in survival of cytotoxic lymphocytes.
No sample metadata fields
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 SamplesThe bone marrow microenvironment in Large Granular Lymphocyte Leukemia (LGLL) patients has been unexplored for its role in the development of cytopenias, which lead to complications resulting in the most prominent causes of morbidity and mortality.
Fibrosis and subsequent cytopenias are associated with basic fibroblast growth factor-deficient pluripotent mesenchymal stromal cells in large granular lymphocyte leukemia.
Specimen part, Disease, Disease stage
View SamplesLong non-coding RNAs (lncRNAs) are expressed in a highly tissue-specific manner where they function in various aspects of cell biology, often as key regulators of gene expression. In this study we established a role for lncRNAs in chondrocyte differentiation. Using RNA sequencing we identified a human articular chondrocyte repertoire of lncRNAs from normal hip cartilage donated by neck of femur fracture patients. Of particular interest are lncRNAs upstream of the master chondrocyte transcription factor SOX9 locus. SOX9 is an HMG-box transcription factor which is essential for chondrocyte development by directing the expression of chondrocyte specific genes. Two of these lncRNAs are upregulated during chondrogenic differentiation of MSCs. Depletion of one of these lncRNA, LOC102723505, which we termed ROCR (regulator of chondrogenesis RNA), by RNAi disrupted MSC chondrogenesis, concomitant with reduced cartilage-specific gene expression and incomplete matrix component production, indicating an important role in chondrocyte biology. Specifically, SOX9 induction was significantly ablated in the absence of ROCR, and overexpression of SOX9 rescued the differentiation of MSCs into chondrocytes. Our work sheds further light on chondrocyte specific SOX9 expression and highlights a novel method of chondrocyte gene regulation involving a lncRNA. Overall design: Human neck of femure fracture hip cartilage chondrocyte mRNA profile generated by RNA-seq
Expression analysis of the osteoarthritis genetic susceptibility mapping to the matrix Gla protein gene MGP.
Sex, Age, Specimen part, Subject
View SamplesFLT3-ITDs Introduce a Myeloid Differentiation and Transformation Bias in Lympho-myeloid Multipotent Progenitors
FLT3-ITDs instruct a myeloid differentiation and transformation bias in lymphomyeloid multipotent progenitors.
Sex, Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Depletion of DNMT1 in differentiated human cells highlights key classes of sensitive genes and an interplay with polycomb repression.
Sex, Specimen part, Time
View SamplesDNA methylation plays a vital role in the cell, but loss-of-function mutations of the maintenance methyltransferase DNMT1 in normal human cells are lethal, precluding target identification, and existing hypomorphic lines are tumour cells. We generated instead a hypomorphic series in normal hTERT-immortalised fibroblasts using stably integrated short hairpin RNA. Approx 2/3 of sites showed demethylation as expected, with 1/3 showing hypermethylation, and targets were shared between the three independently-derived lines. Enrichment analysis indicated significant losses at promoters and gene bodies with four gene classes most affected: 1)protocadherins, which are key to neural cell identity; 2)genes involved in fat homeostasis/body mass determination; 3)olfactory receptors and 4) cancer/testis antigen (CTA) genes. Overall effects on transcription were relatively small in these fibroblasts, but CTA genes showed robust derepression. Comparison with siRNA-treated cells indicated that shRNA lines show substantial remethylation over time. Regions showing persistent hypomethylation in the shRNA lines were associated with polycomb repression, and were derepressed on addition of an EZH2 inhibitor. Persistent hypermethylation in shRNA lines was in contrast associated with poised promoters. Our results suggest polycomb marking blocks remethylation and indicate the sensitivity of key neural, adipose, and cancer-associated genes to chronic depletion of maintenance methylation activity.
Depletion of DNMT1 in differentiated human cells highlights key classes of sensitive genes and an interplay with polycomb repression.
Sex, Specimen part, Time
View SamplesNK-cell lymphoma shares strikingly similar molecular features with a distinct subset of gamma-delta T-cell lymphoma. Gene expression profiling of NK-cell lymphoma patient samples was performed to investigate whether molecular signatures can be used to identify entities of peripheral T-cell lymphoma (PTCL) with NK-cell-like features.
Natural killer cell lymphoma shares strikingly similar molecular features with a group of non-hepatosplenic γδ T-cell lymphoma and is highly sensitive to a novel aurora kinase A inhibitor in vitro.
Sex, Age, Specimen part
View SamplesMicroarray profiles of splenic Tregs and Tconvs from Flicr WT and KO mice
<i>Flicr</i>, a long noncoding RNA, modulates Foxp3 expression and autoimmunity.
Sex, Age
View Samples