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Dendritic cell subtypes from lymph nodes and blood show contrasted gene expression programs upon Bluetongue Virus infection

ABSTRACT: The gene expression in conventional and plasmacytoid dendritic cells (cDC and pDC respectively) during Bluetongue virus (BTV) infection in sheep depends on the lymphoid compartment and suggest that these cell types have a role in the physiopathology

ORGANISM(S): Ovis aries

PROVIDER: GSE48450 | GEO | 2013/07/09

SECONDARY ACCESSION(S): PRJNA210189

REPOSITORIES: GEO

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Dendritic cell subtypes from lymph nodes and blood show contrasted gene expression programs upon Bluetongue Virus infection

Project description:The gene expression in conventional and plasmacytoid dendritic cells (cDC and pDC respectively) during Bluetongue virus (BTV) infection in sheep depends on the lymphoid compartment and suggest that these cell types have a role in the physiopathology We analyzed the gene expression in lymph node pDC and cDC from 3 control and 3 BTV infected sheep at day 6 post infection, in blood pDC from 2 control and 2 BTV infected sheep at day 6 post infection, and in spleen cDC from 3 control and 2 BTV infected sheep at day 6 post infection.

2013-07-09 | E-GEOD-48450 | biostudies-arrayexpress

Whole-transcriptome analyses of sheep embryonic testicular cells infected with bluetongue virus [miRNA-Seq]

Project description:To comprehensively understand the characterization of bluetongue virus (BTV)-host interactome, and BTV infection and pathogenic mechanisms, RNA-seq was performed with BTV serotype 1 Y863 strain-infected and mock-infected sheep embryonic testicular cells (OA3.Ts) at 24 hours post-infection.

2022-11-28 | GSE213638 | GEO

Whole-transcriptome analyses of sheep embryonic testicular cells infected with bluetongue virus [RNA-Seq]

2022-11-28 | GSE213637 | GEO

Dendritic cell subtypes from lymph nodes and blood show contrasted gene expression programs upon Bluetongue virus infection.

Project description: Not available

| S-EPMC3754054 | biostudies-literature

Dusp9 expression and function in dendritic cells

Project description:Plasmacytoid dendritic cells (pDC) efficiently produce large amounts of type I interferon in response to TLR7 and TLR9 ligands, whereas conventional DCs (cDC) predominantly secrete high levels of the cytokines IL-10 and IL-12. The molecular basis underlying this distinct phenotype is not well understood. Here, we identified the MAPK phosphatase Dusp9/MKP-4 by transcriptome analysis as selectively expressed in pDC, but not cDC. We confirmed the constitutive expression of Dusp9 at the protein level in pDC generated in vitro by culture with Flt3L and ex vivo in sorted splenic pDC. Dusp9 expression was low in B220- bone marrow precursors and was up-regulated during pDC differentiation, concomitant with established pDC markers. Higher expression of Dusp9 in pDC correlated with impaired phosphorylation of the MAPK ERK1/2 upon TLR9 stimulation. Notably, Dusp9 was not expressed at detectable levels in human pDC, although these displayed similarly impaired activation of ERK1/2 MAPK compared to cDC. Enforced retroviral expression of Dusp9 in mouse GM-CSF-induced cDC increased the expression of TLR7/9-induced IL-12p40 and IFNwhereas IL-10 levels were diminished. Taken together, our results suggest that the species-specific, selective expression of Dusp9 in murine pDC contributes to the differential cytokine/interferon output of pDC and cDC. pDC and cDC subsets were purified from mouse spleens to high purity and analysed by Affymetrix GeneChips.

2015-06-26 | E-GEOD-54120 | biostudies-arrayexpress

Differential Peak Calling of ChIP-Seq Signals with Replicates with THOR

Project description:Dendritic cells (DC) are professional antigen presenting cells that develop from hematopoietic stem cells in bone marrow by successive steps of lineage commitment and differentiation. Different DC subsets were identified based on phenotype, localisation and function: (i) classical DC (cDC) and plasmacytoid DC (pDC) are found in lymphoid organs and (ii) migratory tissue DC are spread throughout peripheral organs, including Langerhans cells, the cutaneous contingent of DC. We have developed a two-step culture system that recapitulates DC development in vitro (Felker et al., J. Immunol. 185, 5326-5335, 2010). In this system multipotent hematopoietic progenitors (MPP) progress into DC-restricted common DC progenitors (CDP) and further into the two major DC subsets cDC and pDC. We employed chromatin immunoprecipitation (ChIP) with deep sequencing (ChIP-seq) to determine the dynamics of H3K27ac occupancy in MPP, CMP, cDC and pDC. Histone modification H3K27ac and RNA-Seq in MPP, CDP, cDC and pDC

2016-08-03 | E-GEOD-73143 | biostudies-arrayexpress

Binding targets of transcription factor E2-2 in human plasmacytoid dendritic cells

2010-12-21 | GSE24740 | GEO

Gene expression profile of mature plasmacytoid dendritic cells (PDC) after the deletion of transcription factor E2-2

2010-12-21 | GSE24726 | GEO

Gene expression profile of mature plasmacytoid dendritic cells (PDC) after the deletion of transcription factor E2-2

Project description:The interferon-producing plasmacytoid dendritic cells (PDC) share common progenitors with antigen-presenting classical dendritic cells (cDC), yet they possess distinct morphology and molecular features resembling those of lymphocytes. It is unclear whether the unique cell fate of PDC is actively maintained in the steady state. We report that the deletion of transcription factor E2-2 from mature peripheral PDC caused their spontaneous differentiation into cells with cDC properties. This included the loss of PDC markers, increase in MHC class II expression and T cell priming capacity, acquisition of dendritic morphology and induction of cDC signature genes. Genome-wide chromatin immunoprecipitation revealed direct binding of E2-2 to key PDC-specific and lymphoid genes, as well as to certain genes enriched in cDC. Thus, E2-2 actively maintains the cell fate of mature PDC and opposes the “default” cDC fate, in part through direct regulation of lineage-specific gene expression programs. Inducible deletion of E2-2 (Tcf4) has been performed by administering tamoxifen to conditional E2-2flox/flox Rosa26-CreER+ mice or to E2-2flox/flox Rosa26-CreER- control littermates. Four or six days later total splenocytes were isolated, pooled from 2-3 mice and PDC (CD11b- B220+ CD11clow Bst2+) were isolated by sorting. Global gene expression profiles of E2-2-deficient (null) and control (Ctrl) PDC were compared using Affymetrix microarrays (GPL1261).

2010-12-21 | E-GEOD-24726 | biostudies-arrayexpress

Plasmacytoid dendritic cell precursors give rise to conventional dendritic cells via a Siglec-H+ Zbtb46+ Ly6D+ intermediary stage

Project description:Plasmacytoid and conventional dendritic cells (pDC, and cDC) are generated from distinct lymphoid and myeloid progenitor cells in murine bone marrow. Despite the early separation of pDC and cDC lineages, CD11c+ MHCII-/lo Siglec-H+ CCR9lo pDC-like precursor cells are able to differentiate into both pDC and cDC. Single-cell transcriptomics and high-dimensional flow cytometry combined with cell fate analysis revealed the heterogeneity and commitment of subsets in this compartment. While Ly6D– cells within this fraction were cDC-committed and B220hi Ly6Dhi Zbtb46– cells were immediate precursors of pDCs, B220lo Ly6Dhi Zbtb46– cells still had the potential to generate cDCs in addition to pDCs. Transition to cDCs occurred via an intermediary stage marked by coexpression of Siglec-H, Ly6D and Zbtb46. Type I IFN stimulation limited cDC and promoted pDC output from these precursors, demonstrating their plasticity in response to inflammation. Thus, flexibility to divert to cDCs is retained in the pDC lineage at later differentiation stages.

2021-12-01 | GSE189780 | GEO

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