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Unknown,Transcriptomics,Genomics,Proteomics

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Glycogene expression during maturation of human antigen-presenting cells

ABSTRACT: Dr. van Kooyk's laboratory is exploring the function of antigen presenting cells, such as dendritic cells (DC), that regulate viral-antigen recognition, DC trafficking and T cell binding--all processes that initiate immunity or tolerance. Essential in this is the recognition of ligands by C-type lectins and the functional consequences of differential terminal glycosylation that may regulate DC function. In this study, the gene expression profile of glycosylation-related genes is examined in relation to the maturation of human antigen-presenting cells. Two pooled RNA samples, one each from immature and mature human monocyte-derived dendritic cells, were prepared and sent to Microarray Core (E). The RNA was amplified, labeled, and hybridized to the GLYCOv3 microarrays.

ORGANISM(S): Homo sapiens

SUBMITTER: Steven Head

PROVIDER: E-GEOD-28946 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Glycogene expression during maturation of human antigen-presenting cells

Project description:Dr. van Kooyk's laboratory is exploring the function of antigen presenting cells, such as dendritic cells (DC), that regulate viral-antigen recognition, DC trafficking and T cell binding--all processes that initiate immunity or tolerance. Essential in this is the recognition of ligands by C-type lectins and the functional consequences of differential terminal glycosylation that may regulate DC function.

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Changes in glycogene expression during maturation of dendritic cells

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Changes in glycogene expression during maturation of dendritic cells

Project description:Dr. van Kooyk's laboratory is interested in investigating the expression of glycosyltransferases in dendritic cells and the changes in expression associated with maturation. Dr. van Kooyk's laboratory is exploring the function of antigen presenting cells, such as dendritic cells (DC), that regulate viral-antigen recognition, DC trafficking and T cell binding--all processes that initiate immunity or tolerance. Essential in this is the recognition of ligands by C-type lectins and the functional consequences of differential terminal glycosylation that may regulate DC function. RNA preparations from monocytes and dendritic cells (DC) from Ai and Bi (immature DC), Am and Bm (mature DC), and C (monocyte) from healthy human donors were sent to the Microarray Core (E). The RNA was amplified, labeled, and hybridized to the GLYCOv3 microarrays

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Project description:Antigen presenting cells (APC) are a heterogenous population, comprised of macrophages/monocytes (CD14+ cells), classical dendritic cells (CD141+DC and CD1c+ DC) and pDC. Upon stimulation, APC migrate from peripheral organs to lymph nodes, where they drive T cell specific lineage fate, that is towards immune activation or suppression. APC in human tissues remain poorly defined. Through our previous published data we have charactised APC within adult skin and blood. Here we extend these findings, by performing microarray analysis of adult lung CD14+ DC, CD141+ DC and CD1c+ DC. Once, we were confident we could clearly distinguish the populations of interest (CD14+ cell, CD141+ DC and CD1c+ DC) from other cells, we sorted FACS purified the cells and prepared them for gene array analysis.

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Gene array analysis of human adult skin and spleen antigen presenting cells.

Project description:Antigen presenting cells (APC) are a heterogenous population, comprised of macrophages/monocytes (CD14+ cells), classical dendritic cells (CD141+DC and CD1c+ DC) and pDC. Upon stimulation, APC migrate from peripheral organs to lymph nodes, where they drive T cell specific lineage fate, that is towards immune activation or suppression. APC in human tissues remain poorly defined. Through our previous published data we have charactised APC within adult skin and blood. Here we extend these findings, by increasing the sample for skin CD14+ DC and CD1c+ DC and performing gene array analysis of adult spleen CD14+ DC, CD141+DC and CD1c+ DC. Once, we were confident we could clearly distinguish our populations (CD14+ cell, CD141+ DC and CD1c+ DC) of interest from other cells, we sorted FACS purified the cells and prepared them for gene array analysis. Through generating subset specific gene signatures and comparing CMAP scores we confirmed we had identified equivalent APC subsets across human adult skin and spleen.

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Analysis of Mouse Dendritic and Antigen presenting cell and Mouse autoimmune and Inflammatory Response

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2010-05-06 | E-GEOD-17699 | biostudies-arrayexpress

Identifiation and characterisation of human fetal antigen presenting cells subsets.

Project description:The human immune system evolves gradually from the embryo to adult, continuously adapting to the ever-changing environment of the human body. The ability of our immune system to sense external cues and adapt as we develop is as important in the early tolerogenic environment of the fetus, as it is in the constantly pathogen-challenged adult. Dendritic cells (DC), professional antigen sensing and presenting cells, play a crucial role in such processes as sentinels of the immune system, initiating and regulating immune responses. We have previously characterised CD14+ DC, CD1c+DC and CD141+DC subset by flow cytometry and microarray transcriptome analysis in adult mucosal tissues, and have described their superior abilities to either induce IL-17 responses or to cross-present external antigens respectively. However, the role of such DC subsets in the tolerogenic environment of the fetus remains undefined, prompting us to investigate the ontogeny and functional significance of human fetal DCs.

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