DC differentiation from DC progenitor in vitro
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE575 | GEO | 2004/09/30
SECONDARY ACCESSION(S): PRJNA85349
REPOSITORIES: GEO
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Project description:FLT3+CD11b+ DC progenitor was amplified in vitro from mouse bone marrow. DC were differentiated using GM-CSF and analyzed at day 7 and day 10 of differentiation and after 16h TNFalpha stimulation at day 10
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Project description:Dendritic cells (DC) develop from hematopoietic stem cells, which is guided by instructive signals through cytokines. DC development progresses from multipotent progenitors (MPP) via common DC progenitors (CDP) into DC. Flt3 ligand (Flt3L) signaling via the Flt3/Stat3 pathway is of pivotal importance for DC development under steady state conditions. Additional factors produced during steady state or inflammation, such as TGF-beta1 or GM-CSF, also influence the differentiation potential of MPP and CDP. Here, we studied how gp130, GM-CSF and TGF-beta1 signaling influence DC lineage commitment from MPP to CDP and further into DC. We observed that activation of gp130 signaling promotes expansion of MPP. Additionally, gp130 signaling inhibited Flt3L-driven DC differentiation, but had little effect on GM-CSF-driven DC development. The inflammatory cytokine GM-CSF induces differentiation of MPP into inflammatory DC and blocks steady state DC development. Global transcriptome analysis revealed a GM-CSF-driven gene expression repertoire that primes MPP for differentiation into inflammatory DC. Finally, TGF-beta1 induces expression of DC-lineage affiliated genes in MPP, including Flt3, Irf-4 and Irf-8. Under inflammatory conditions, however, the effect of TGF- beta1 is altered: Flt3 is not upregulated, indicating that an inflammatory environment inhibits steady state DC development. Altogether, our data indicate that distinct cytokine signals produced during steady state or inflammation have a different outcome on DC lineage commitment and differentiation. 6 samples in total. Multipotent progenitor - GM-MPP_1 - GM-MPP_2 Dendritic cell - GM-DC_1 - GM-DC_2 Dendritic cell plus TNFa - GM-TNFa-DC_1 - GM-TNFa-DC_2
2011-11-13 | E-GEOD-29241 | biostudies-arrayexpress
Project description:Dendritic cells (DC) develop from hematopoietic stem cells, which is guided by instructive signals through cytokines. DC development progresses from multipotent progenitors (MPP) via common DC progenitors (CDP) into DC. Flt3 ligand (Flt3L) signaling via the Flt3/Stat3 pathway is of pivotal importance for DC development under steady state conditions. Additional factors produced during steady state or inflammation, such as TGF-beta1 or GM-CSF, also influence the differentiation potential of MPP and CDP. Here, we studied how gp130, GM-CSF and TGF-beta1 signaling influence DC lineage commitment from MPP to CDP and further into DC. We observed that activation of gp130 signaling promotes expansion of MPP. Additionally, gp130 signaling inhibited Flt3L-driven DC differentiation, but had little effect on GM-CSF-driven DC development. The inflammatory cytokine GM-CSF induces differentiation of MPP into inflammatory DC and blocks steady state DC development. Global transcriptome analysis revealed a GM-CSF-driven gene expression repertoire that primes MPP for differentiation into inflammatory DC. Finally, TGF-beta1 induces expression of DC-lineage affiliated genes in MPP, including Flt3, Irf-4 and Irf-8. Under inflammatory conditions, however, the effect of TGF- beta1 is altered: Flt3 is not upregulated, indicating that an inflammatory environment inhibits steady state DC development. Altogether, our data indicate that distinct cytokine signals produced during steady state or inflammation have a different outcome on DC lineage commitment and differentiation.
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Project description:FLT3+/CD11b+ Dendritic cell (DC) progenitor was amplified in vitro from mouse bone marrow. Keywords: repeat sample
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Project description:miRNA profiling of CD34+ derived, in vitro-generated Langerhans cells (LCs) and interstitial-type dendritic cells (intDCs). Epidermal Langerhans cells (LCs) form a network of dendritic cells (DCs) in basal/suprabasal layers of the skin and are characterized by a unique phenotype (CD207+ CD1abright CD324+ CD11b-). Due to their specific location at body surfaces, LCs are constantly exposed to environmental stimuli. Conversely, interstitial-type DCs (intDCs) are located in adjacent tissues and can be discriminated from LCs phenotypically (CD207- CD1adim CD324- CD11b+). These DCs constitute a second line of defense against pathogens that have crossed the epithelial barrier. During development both DC subsets originally arise from myeloid progenitor cells via monocyte-committed intermediates in response to specific microenvironmental signals. Additionally certain pools of DCs can be replenished by tissue resident cells or monocytes in response to specific microenvironmental signals (2, 4, 5). In vitro generated GM-CSF/IL-4-dependent DCs derived either from CD14+ monocytes or via CD14+CD11b+ monocyte intermediates from CD34+ progenitor cells share many characteristics with intDCs in vivo. On the other hand, LCs generated from CD34+ cells under serum-free TGF-beta1-dependent conditions phenotypically resemble epidermal-resident LCs. Since these two DC subsets are of considerable interest for clinical cell therapy studies, an improved understanding of their development and function is of substantial relevance. To identify differentially expressed miRNAs in DC subsets, we performed a miRNA screen. Therefore, we generated LCs or intDCs from human CD34+ cord blood haematopoietic progenitor cells as described. For intDCs, CD34+ cells (1 x 104 to 2 x 104/ml per well) were cultured in 24-well tissue culture plates in serum free CellGro® DC medium (CellGenix, Freiburg, Germany) supplemented with GM-CSF (100 ng/ml), SCF (20 ng/ml), FL (50 ng/ml) and TNFalpha (2.5 ng/ml) for 3-5 days and subsequently with GM-CSF (100 ng/ml) and IL-4 (2.5 ng/ml) for 4-5 days. For LCs, CD34+ cells (1 x 104 to 2 x 104/ml per well) were cultured in 24-well tissue culture plates in serum free CellGro® DC medium (CellGenix, Freiburg, Germany) supplemented with GM-CSF (100 ng/ml), SCF (20 ng/ml), FL (50 ng/ml), TNFalpha (2.5 ng/ml) and TGF-beta1 (0.5 ng/ml). The well-established immunophenotype of LCs (CD1ahi CD11b- CD207+ CD324+) and intDCs (CD1a+ CD11b+ CD207- CD324-) was confirmed by FACS. These two DC subsets were purified and submitted to differential miRNA profiling. Two conditioned experiment LCs vs. intDCs. Biological replicates: 3 LCs, 3 intDCs, independently differentiated, harvested and purified. 3 replicates each were pooled and hybridized on one array. Supplementary files linked below.
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Project description:miRNA profiling of CD34+ derived, in vitro-generated Langerhans cells (LCs) and interstitial-type dendritic cells (intDCs). Epidermal Langerhans cells (LCs) form a network of dendritic cells (DCs) in basal/suprabasal layers of the skin and are characterized by a unique phenotype (CD207+ CD1abright CD324+ CD11b-). Due to their specific location at body surfaces, LCs are constantly exposed to environmental stimuli. Conversely, interstitial-type DCs (intDCs) are located in adjacent tissues and can be discriminated from LCs phenotypically (CD207- CD1adim CD324- CD11b+). These DCs constitute a second line of defense against pathogens that have crossed the epithelial barrier. During development both DC subsets originally arise from myeloid progenitor cells via monocyte-committed intermediates in response to specific microenvironmental signals. Additionally certain pools of DCs can be replenished by tissue resident cells or monocytes in response to specific microenvironmental signals (2, 4, 5). In vitro generated GM-CSF/IL-4-dependent DCs derived either from CD14+ monocytes or via CD14+CD11b+ monocyte intermediates from CD34+ progenitor cells share many characteristics with intDCs in vivo. On the other hand, LCs generated from CD34+ cells under serum-free TGF-beta1-dependent conditions phenotypically resemble epidermal-resident LCs. Since these two DC subsets are of considerable interest for clinical cell therapy studies, an improved understanding of their development and function is of substantial relevance. To identify differentially expressed miRNAs in DC subsets, we performed a miRNA screen. Therefore, we generated LCs or intDCs from human CD34+ cord blood haematopoietic progenitor cells as described. For intDCs, CD34+ cells (1 x 104 to 2 x 104/ml per well) were cultured in 24-well tissue culture plates in serum free CellGro® DC medium (CellGenix, Freiburg, Germany) supplemented with GM-CSF (100 ng/ml), SCF (20 ng/ml), FL (50 ng/ml) and TNFalpha (2.5 ng/ml) for 3-5 days and subsequently with GM-CSF (100 ng/ml) and IL-4 (2.5 ng/ml) for 4-5 days. For LCs, CD34+ cells (1 x 104 to 2 x 104/ml per well) were cultured in 24-well tissue culture plates in serum free CellGro® DC medium (CellGenix, Freiburg, Germany) supplemented with GM-CSF (100 ng/ml), SCF (20 ng/ml), FL (50 ng/ml), TNFalpha (2.5 ng/ml) and TGF-beta1 (0.5 ng/ml). The well-established immunophenotype of LCs (CD1ahi CD11b- CD207+ CD324+) and intDCs (CD1a+ CD11b+ CD207- CD324-) was confirmed by FACS. These two DC subsets were purified and submitted to differential miRNA profiling.
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