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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling by array of human monocyte-derived dendritic cells induced by TLR agonists in the presence or absence of PP2

ABSTRACT: Analysis of monocyte-derived dendritic cells (MoDC) gene expression signature induced by TLR agonists the in presence or in the absence of PP2.

ORGANISM(S): Homo sapiens

SUBMITTER: Elisabetta Monaci

PROVIDER: E-TABM-1018 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Modulation of transcriptional and inflammatory responses in murine macrophages by the Mycobacterium tuberculosis mammalian cell entry (Mce) 1 complex.

Project description:The outcome of many infections depends on the initial interactions between agent and host. Aiming at elucidating the effect of the M. tuberculosis Mce1 protein complex on host transcriptional and immunological responses to infection with M. tuberculosis, RNA from murine macrophages at 15, 30, 60 min, 4 and 10 hrs post-infection with M. tuberculosis H37Rv or mce1 H37Rv was analyzed by whole-genome microarrays and RT-QPCR. Immunological responses were measured using a 23-plex cytokine assay. Compared to uninfected controls, 524 versus 64 genes were up-regulated by 15min post H37Rv- and mce1 H37Rv-infection, respectively. By 15min post-H37Rv infection, a decline of 17 cytokines combined with up-regulation of Ccl24 (26.5-fold), Clec4a2 (23.2-fold) and Ppar (10.5-fold) indicated an anti-inflammatory response initiated by IL-13. Down-regulation of Il13ra1 combined with up-regulation of Il12b (30.2-fold), suggested switch to a pro-inflammatory response by 4hrs post H37Rv-infection. Whereas no significant change in cytokine concentration or transcription was observed during the first hour post mce1 H37Rv-infection, a significant decline of IL-1b, IL-9, IL-13, Eotaxin and GM-CSF combined with increased transcription of Il12b (25.1-fold) and Inb1 (17.9-fold) by 4hrs, indicated a pro-inflammatory response. The balance between pro-and anti-inflammatory responses during the early stages of infection may have significant bearing on outcome.

2011-10-05 | E-TABM-1170 | biostudies-arrayexpress

Transcriptome analysis of Neisseria meningitidis strain MC58 in GC medium

Project description:Transcriptome analysis of Neisseria meningitidis strain MC58 during a time course growth in GC medium

2011-06-09 | E-TABM-1113 | biostudies-arrayexpress

Transcriptome analysis of Neisseria meningitidis strain MC58 in human whole blood

Project description:Transcriptome analysis of Neisseria meningitidis strain MC58 during a time course growth in human whole blood

2011-06-09 | E-TABM-1115 | biostudies-arrayexpress

Transcription profiling of human dendritic cells to identify a combinatorial code by which DCs discriminate pathogens and provide (suggest) a rationale to design adjuvants for TH1 responses.

Project description:Toll like receptors (TLRs) sense microbial products and initiate adaptive immune responses by activating dendritic cells (DCs). Since pathogens may contain several agonists we asked whether different TLRs may synergize in DC activation. We report that in human and mouse DC TLR3 or TLR4 potently synergize with TLR7, TLR8 or TLR9 in the induction of selected cytokine genes. Upon synergistic stimulation, IL-12, IL-23 and Delta-4 are induced at levels 50-100 fold higher than those induced by optimal concentrations of single agonists, leading to enhanced and sustained TH1 polarizing capacity. Using microarray analysis we show that only 1.5% of the transcripts induced by single TLR agonists are synergistically regulated by combinations of TLR4 and TLR8 agonists.. These results identify a combinatorial code by which DCs discriminate pathogens and provide (suggest) a rationale to design adjuvants for TH1 responses. Series_overall_design: 3 untreated, 3 treated with LPS at 2h, 3 treated with LPS at 8h, 3 treated with R848 at 2h, 3 treated with R848 at 8h, 3 treated with LPS + R848 at 2h, 3 treated with LPS + R848 at 8h

2007-09-14 | E-GEOD-2706 | biostudies-arrayexpress

Human XCR1+ Dendritic Cells Derived In Vitro from CD34+ Progenitors Closely Resemble Blood Dendritic Cells, Including Their Adjuvant Responsiveness, Contrary to Monocyte-Derived Dendritic Cells

Project description:Functional characterization of human dendritic cell subsets is limited due to the very low frequency of these cells in vivo. We developed an in vitro culture system for the simultaneous generation of XCR1+ DCs and MoDCs from cord blood CD34+ cells. Their global gene expression profiles at steady state and under activation, phenotypes, morphologies and responses to different TLR ligands where characterized and compared with those of their in vivo counterparts. The study demonstrated that the XCR1+ DCs generated in vitro from cord blood CD34+ cells are equivalent to blood XCR1+ DCs and also allowed a rigorous comparison of this DC subset with MoDC which are often considered as the reference model for DCs. Altogether, our results showed that in vitro generated XCR1+ DCs are a better model for the study of blood DC than the conventionally used MoDCs. The different dendritic cell subsets used for the study were either generated in vitro from cord blood CD34+ cells with recombinant human cytokines or isolated from peripheral blood. The subsets were purified by fluorescence-activated cell sorting and their responses to PolyI:C, LPS or R848 were studied including by gene expression profiling.

2014-07-23 | E-GEOD-57671 | biostudies-arrayexpress

MoMaTEC1606

Project description:Metastatic lesions of endometrial cancer. The data was firstly utilized for identification of highly connected and differentially expressed subnetworks between aggressive primary tumors and metastases. The 66 primary tumor samples have been reused from E-MTAB-2532 using the same prefix (4 digits) of Normalization Name.

2017-12-30 | E-MTAB-5017 | biostudies-arrayexpress

OncoMap

Project description:The aim is to investigate expression patterns of 69 primary tumor samples related to mutation status of FGFR2, KRAS and PIK3CA, and clinico-pathological data.

2013-01-24 | E-MTAB-1358 | biostudies-arrayexpress

Role of interleukin-4 in the licensing of dendritic cells for the induction of Th2 responses [B]

Project description:T helper type 2 (Th2) responses are crucial for defense against infections by helminths and are responsible for the development of allergic reactions that can lead to severe clinical disorders, such as asthma or anaphylaxis, and ultimately to death. The induction of Th2 responses requires a specific activation process, triggered by specialized dendritic cells (DCs), by which naive CD4+ Th0 cells acquire the capacity to produce Th2 cytokines. However, the mechanistic basis of the functional specialization enabling DCs for the initiation of Th2 responses has remained elusive. Here we show that interleukin-4 (IL-4), a cytokine produced by basophils, mast cells and Th2-polarized CD4+ T helper cells, exerting a crucial function during anti-helminths and allergic Th2 responses, has a key role in the licensing/conditioning of DCs for the induction of Th2 responses, by bloking their potential to produce Th1-driving cytokines, such as IL-12, IL-18 and IL-23. Microarray analyses (duplicates) were used to compared the transcriptional profile of monocyte-derived dendritic cells (moDCs) cultured with GM-CSF in the absence or presence of interleukin-4: IL4-moDCs versus C-moDCs.

2014-02-19 | E-GEOD-39858 | biostudies-arrayexpress

Role of interleukin-4 in the licensing of dendritic cells for the induction of Th2 responses

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2014-02-19 | E-GEOD-39863 | biostudies-arrayexpress

PolyI:C stimulation of KO vs. WT BMDMs

Project description:Primary murine bone marrow derived macrophages (BMDMs) of Setdb2GT/GT and WT mice were stimulated with polyI:C and harvested at 0, 2 and 8h. Everything with biological triplicates (=cells from 3 individual mice per condition)

2014-11-23 | E-MTAB-2263 | biostudies-arrayexpress

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