This study was performed to understand what controls the aggressivity of the pancreatic infiltrate during type-I diabetes development. We used the BDC2.5 transgenic mouse model. Samples were obtained at the age of onset of insultis. Depending on their genetic background, mice transgenic for the BDC2.5 T cell receptor present very different forms of insulitis. The NOD genetic background leads to a benign insulitis whereas the C57Bl/6-H2g7/g7 leads to an aggressive insulitis. We first studied how antigen-specific T cells are affected by these differences by obtaining the transcriptional profiles of BDC2.5 T cells from pancreas and pancreatic lymph nodes. We also compared the gene expression profiles of the entire leukocyte population present in the pancreatic lesion.
Natural killer cells distinguish innocuous and destructive forms of pancreatic islet autoimmunity.
Age, Specimen part
View SamplesThe study of the roles of macrophages in the microenvironment of cancer cells (tumor-associated macrophages, TAM) has gained deep insight over the recent years. Here, we describe gene expression profile of chronic lymphocytic leukemia (CLL)-associated macrophages, also called nurse-like cells (NLC), derived from in vitro co-cultures system.
Human monocyte recognition of adenosine-based cyclic dinucleotides unveils the A2a Gαs protein-coupled receptor tonic inhibition of mitochondrially induced cell death.
Specimen part, Disease, Disease stage
View SamplesThe development of high-throughput genomic technologies has revealed that a large fraction of the genomes of eukaryotes is associated with the expression of noncoding RNAs. One class of noncoding RNA, the cis-natural antisense transcripts (cis-NATs), are particularly interesting as they are at least partially complementary to the protein-coding mRNAs. Although most studies described cis-NATs involved in the regulation of transcription, a few reports have shown recently that cis-NATs can also regulate translation of the cognate sense coding genes in plants and mammals. In order to identify novel examples of translation regulator cis-NATs in Arabidopsis thaliana, we designed a high-throughput experiment based on polysome profiling and RNA-sequencing. Expression of cis-NATs and translation efficiency of the cognate coding mRNAs were measured in roots and shoots in response to various conditions, including phosphate deficiency and treatment with phytohormones. We identified several promising candidates, and validated a few of them experimentally, in Arabidopsis thaliana transgenic lines over-expressing in trans the translation regulator candidate cis-NATs. Overall design: total RNA and polysomal RNA was sequenced from Arabidopsis thaliana whole seedlings grown in high or low pohsphate content, or from roots or shoots from seedlings treated or not with different phytohormones (Ctrl, IAA, ABA,MeJA and ACC). 3 biological replicates were analyzed for each of the 12 experimental conditions.
Prediction of regulatory long intergenic non-coding RNAs acting in trans through base-pairing interactions.
Specimen part, Treatment, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Performance comparison of two microarray platforms to assess differential gene expression in human monocyte and macrophage cells.
Sex, Age, Specimen part
View SamplesThe present study was conducted to compare the ability of Affymetrix and Illumina microarray technologies to characterize the differential gene expression profiles of human monocytes and monocyte-derived-macrophages.
Performance comparison of two microarray platforms to assess differential gene expression in human monocyte and macrophage cells.
Sex, Age, Specimen part
View SamplesDiminishing potential to replace damaged tissues is a hallmark for ageing of somatic stem cells, but the mechanisms leading to ageing remain elusive. We present a proteome-wide atlas of age-associated alterations in human haematopoietic stem and progenitor cells (HPCs) along with five other cell types that constitute the bone marrow niche. For each, the abundance of a large fraction of the ~12,000 proteins identified was assessed in a cohort of healthy human subjects from different age. As the HPCs became older, pathways in central carbon metabolism exhibited features reminiscent of the Warburg effect where glycolytic intermediates are rerouted towards anabolism. Simultaneously, altered abundance of early regulators of HPC differentiation revealed a reduced functionality and a bias towards myeloid differentiation at the expense of lymphoid development. Ageing caused significant alterations in the bone marrow niche too, such as functionality of the pathways involved in HPC homing and lineage differentiation. The data represents a valuable resource for further in-depth mechanistic analyses, and for validation of knowledge gained from animal models. Overall design: RNA-seq samples extracted from human bone marrow, from 6 cell populations (HPC, LYM, MON, ERP, GRA, MSC). Technical replicates are included for each donor and cell type. Technical replicates were produced by making independent libraries from the same RNA.
Glycogen accumulation, central carbon metabolism, and aging of hematopoietic stem and progenitor cells.
Sex, Age, Specimen part, Subject
View SamplesInvestigation of the transcriptome profile of lung dendritic cells (DCs) of two genetically different pig breeds (Pietrain and Duroc) after PRRSV infection in vitro and determination of the temporal changes in transcriptional profiles. Overall design: Pietrain and Duroc lung DCs were isolated and infected in vitro with PRRSV. Total cellular mRNA from non-infected (0 hours) and infected (3, 6, 9, 12 and 24 hours post infection) lung DCs was extracted and 12 lung DCs samples were used for the global transcriptome profile analysis (RNA-Seq).
Transcriptome profile of lung dendritic cells after in vitro porcine reproductive and respiratory syndrome virus (PRRSV) infection.
Sex, Specimen part, Subject
View SamplesAstrocytes react to brain injury in a heterogeneous manner with only a subset resuming proliferation and acquiring in vitro neural stem cell properties. In order to identify novel regulators of this astrocyte subset, we performed a genome-wide expression analysis of reactive astrocytes isolated 5 days after stab wound injury from the adult mouse cerebral cortex. The expression pattern was compared with astrocytes from normal cortex and adult neural stem cells isolated from the sub-ependymal zone (GSE18765). These comparisons revealed a set of genes up-regulated both in neurogenic neural stem cells and reactive astrocytes, including the lectins Galectin-1 and -3. These results, as well as the pattern of Galectin expression in the lesioned brain, led us to examine the functional significance of these lectins in brains of Galectin-1/3 double-knockout mice.
Astrocyte reactivity after brain injury-: The role of galectins 1 and 3.
Sex, Specimen part, Treatment, Time
View SamplesrGal1 (recombinant Galectin-1) vs non treated (Ctrl) pancreatic cancer cell line RWP-1
Targeting galectin-1 inhibits pancreatic cancer progression by modulating tumor-stroma crosstalk.
Specimen part, Cell line
View SamplesWe performed RNA sequencing analysis of hepatic gene expression a few hours after amlexanox treatment, and identified over 1700 differentially expressed genes. Pathway analysis of these differentially regulated genes revealed that the top two most enriched pathways were the adipocytokine signaling pathway and the Jak-STAT signaling pathway. Overall design: RNA-seq analysis of hepatic gene expression was used to identify differentially expressed genes in response to Amlexanox treatment.
A subcutaneous adipose tissue-liver signalling axis controls hepatic gluconeogenesis.
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