HIV+ Elite and Viremic controllers (EC/VCs) are able to control virus infection, perhaps because of host genetic determinants. We identified 16% (21 of 131) EC/VCs with CD4+ T cells with resistance specific to R5-tropic HIV, reversed after introduction of CCR5. R5 resistance was not observed in macrophages and depended upon the method of T cell activation. CD4+ T cells of these EC/VCs had lower CCR2 and CCR5 mRNA levels, reduced CCR2 and CCR5 cell-surface expression, and decreased levels of secreted chemokines. T cells had no changes in chemokine receptor mRNA half-life but instead had lower levels of active transcription of CCR2 and CCR5, despite having more accessible chromatin by Assay for Transposase Accessible Chromatin with high-throughput sequencing (ATAC-seq). Other nearby genes were also down-regulated, over a region of ~500kb on chromosome 3p21. This same R5 resistance phenotype was observed in family members of an index VC, also associated with CCR2/CCR5 down-regulation, suggesting that the phenotype is heritable. Overall design: RNA-seq was performed to identify up- or down-regulated genes associated with in vitro resistance to R5-tropic viruses in activated CD4+ T cells from HIV+ Elite Controllers and family members
Transcriptional down-regulation of <i>ccr5</i> in a subset of HIV+ controllers and their family members.
Specimen part, Subject
View SamplesThe goals were to investigate differences in gene expression between wild type and Gpr120 knockout mouse interscapular brown adipose tissue
The GPR120 agonist TUG-891 promotes metabolic health by stimulating mitochondrial respiration in brown fat.
Sex, Age, Specimen part
View SamplesObjective: Transcriptional profiling of murine HSPC in response to ß-glucan-induced innate immune training Overall design: HSPC mRNA profiles of wild type (WT) mice injected with PBS or ß-glucan. Wild type (WT) C57BL/6 mice were intraperitoneally injected with PBS or 1 mg ß-glucan in PBS. Mice were sacrificed on day 7 or day 28 and long-term heematopoietic stem cells (LT-HSC) and/or multipotent progenitors (MPP) were sorted. In another group, mice were injected with PBS or 1 mg ß-glucan in PBS and on day 7 they were additionally injected with 150 mg/kg 5-fluouracil. Mice were sacrificed on day 14 after 5-FU administration and LT-HSC were sorted.
Modulation of Myelopoiesis Progenitors Is an Integral Component of Trained Immunity.
Age, Specimen part, Cell line, Subject
View SamplesTrypanosoma cruzi is an obligate intracellular protozoan parasite that causes human Chagas disease, a leading cause of heart failure in Latin America. Using Affymetrix oligonucleotide arrays we screened phenotypically diverse human cells (foreskin fibroblasts, microvascular endothelial cells and vascular smooth muscle cells) for a common transcriptional response signature to T. cruzi. A common feature was a prominent type I interferon response, indicative of a secondary response to secreted cytokines. Using transwell plates to distinguish cytokine-dependent and -independent gene expression profiles in T. cruzi-infected cells, a core cytokine-independent response was identified in fibroblasts and endothelial cells that featured metabolic and signaling pathways involved in cell proliferation, amino acid catabolism and response to wounding. Significant downregulation of genes involved in mitotic cell cycle and cell division predicted that T. cruzi infection impedes cell cycle progression in the host cell.
Cytokine-dependent and-independent gene expression changes and cell cycle block revealed in Trypanosoma cruzi-infected host cells by comparative mRNA profiling.
No sample metadata fields
View SamplesThe intracellular pathogen Trypanosoma cruzi secretes an activity that blocks TGF--dependent induction of connective tissue growth factor (CTGF/CCN2). Here, we address the mechanistic basis for T. cruzi-mediated interference of
A soluble factor from Trypanosoma cruzi inhibits transforming growth factor-ß-induced MAP kinase activation and gene expression in dermal fibroblasts.
Specimen part
View SamplesBefore and after anaerobic Fe(II) shocked WT and ?bqsR of late stationary phase P. aeruginosa PA14 strains Associated publication: Kreamer NN, Costa F, Newman DK. 2015. The ferrous iron-responsive BqsRS two-component system activates genes that promote cationic stress tolerance. mBio 6(1):e02549-14. doi:10.1128/mBio.02549-14. Overall design: Expression profiles of rRNA-depleted total RNA from WT and ?bqsR Fe(II)-shocked (before and after 30 min incubation with 200 µM ferrous ammonium sulfate ) cultures grown anaerobically to deep stationary phase (A500 = 0.8) in Fe-limited (1 µM ferrous ammonium sulfate) MOPS minimal medium containing succinate as the carbon source, in triplicate
The ferrous iron-responsive BqsRS two-component system activates genes that promote cationic stress tolerance.
Cell line, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Mice without macroH2A histone variants.
Sex, Specimen part
View SamplesMacroH2As core histone variants have a unique structure that includes C-terminal nonhistone domain. MacroH2As are highly conserved in vertebrates, and are thought to regulate gene expression. However the nature of genes regulated by macroH2As and the biological significance of macroH2As for the organism remain unclear. Here we examine macroH2A function in vivo by knocking out both macroH2A1 and macroH2A2 in the mouse.
Mice without macroH2A histone variants.
Sex, Specimen part
View SamplesMacroH2As core histone variants have a unique structure that includes C-terminal nonhistone domain. MacroH2As are highly conserved in vertebrates, and are thought to regulate gene expression. However the nature of genes regulated by macroH2As and the biological significance of macroH2As for the organism remain unclear. Here we examine macroH2A function in vivo by knocking out both macroH2A1 and macroH2A2 in the mouse.
Mice without macroH2A histone variants.
Sex, Specimen part
View SamplesFollicular lymphoma (FL) is an indolent lymphoma associated with follicular center B cells, and typically contains the Bcl-2 chromosomal translocation t(14;18), which leads to overexpression of the anti-apoptotic intracellular protein Bcl-2. FLs are sensitive to chemotherapy; however, patient relapses occur and response duration becomes progressively shorter, with the majority of patients eventually dying from the disease. Enzastaurin (LY317615), an acyclic bisindolylmaleimide, was initially developed as an ATP-competitive selective inhibitor of PKC. We found, in agreement with recent reports, that enzastaurin inhibits cell proliferation and induces apoptosis. These results are consistent with decreased phosphorylation of the Akt pathway and its downstream targets. To provide new insights into the anti-tumor action of enzastaurin on non-Hodgkin lymphoma, we investigated its effects on gene expression profiles of the B cell lymphoma RL cell line by oligonucleotide microarray analysis. We identified a set of 41 differentially expressed genes, mainly involved in cellular adhesion, apoptosis, inflammation, and immune and defense responses. These observations provide new insights into the mechanisms involved in the induction of apoptosis by enzastaurin in B cell lymphoma cell lines, and identify possible pathways that may contribute to the induction of apoptosis.
Genomic profiling of enzastaurin-treated B cell lymphoma RL cells.
Specimen part, Cell line, Treatment
View Samples