Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA171513 | ENA |
REPOSITORIES: ENA
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Project description:Identification of HLA-DR as an antigen for a Vdelta1-positive gamma-delta TCR
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Project description:T cells bearing gamma delta T cell antigen receptors (TCRs) function in lymphoid stress surveillance. However, the contribution of gamma delta TCRs to such responses is unclear. Here we found that the TCR of a human V gamma4Vdelta5 clone directly bound endothelial protein C receptor (EPCR), which allowed gamma delta T cells to recognize both endothelial cells targeted by cytomegalovirus and epithelial tumors. EPCR is a major histocompatibility complex–like molecule that binds lipids analogously to the antigen-presenting molecule CD1d. However, the V gamma4Vdelta5 TCR bound EPCR independently of lipids, in an antibody-like way. Moreover, the recognition of target cells by gamma delta T cells required a multimolecular stress signature composed of EPCR and costimulatory ligand(s). Our results demonstrate how a gamma delta TCR mediates recognition of broadly stressed human cells by engaging a stress-regulated self antigen. 2E9 is an antibody that blocks gd-TCR recognition of human cells that are the targets of the clone LES. 2E9 also stains cells that are targeted by LES. Therefore, to identify the TCR ligand expressed by 2E9-positive cells, Gene Expression was compared in two cell lines that stain with 2E9 (K562 and U937) versus two cell lines that do not (Hutu80 and Huh7).
2012-07-27 | E-GEOD-39709 | biostudies-arrayexpress
Project description:The Ag receptors on alpha/beta and gamma/delta T cells differ not only in the nature of the ligands that they recognize but also in their signaling potential. We hypothesized that the differences in alpha/beta - and gamma/delta TCR signal transduction were due to differences in the intracellular signaling pathways coupled to these two TCRs. To investigate this, we employed transcriptional profiling to identify genes encoding signaling molecules that are differentially expressed in mature alpha/beta and gamma/delta T cell populations. Unexpectedly, we found that B lymphoid kinase (Blk), a Src family kinase expressed primarily in B cells, is expressed in gamma/delta T cells but not in alpha/beta T cells. Analysis of Blk-deficient mice revealed that Blk is required for the development of IL-17-producing gamma/delta T cells. Furthermore, Blk is expressed in lymphoid precursors and, in this capacity, plays a role in regulating thymus cellularity during ontogeny. Naive alpha/beta and gamma/delta T cells isolated from mouse lymph nodes and purified by negative selection were compared using MOE430 2.0 GeneChip.
2010-09-23 | E-GEOD-24281 | biostudies-arrayexpress
Project description:T cells bearing gamma delta T cell antigen receptors (TCRs) function in lymphoid stress surveillance. However, the contribution of gamma delta TCRs to such responses is unclear. Here we found that the TCR of a human V gamma4Vdelta5 clone directly bound endothelial protein C receptor (EPCR), which allowed gamma delta T cells to recognize both endothelial cells targeted by cytomegalovirus and epithelial tumors. EPCR is a major histocompatibility complex–like molecule that binds lipids analogously to the antigen-presenting molecule CD1d. However, the V gamma4Vdelta5 TCR bound EPCR independently of lipids, in an antibody-like way. Moreover, the recognition of target cells by gamma delta T cells required a multimolecular stress signature composed of EPCR and costimulatory ligand(s). Our results demonstrate how a gamma delta TCR mediates recognition of broadly stressed human cells by engaging a stress-regulated self antigen.
2012-07-28 | GSE39709 | GEO
Project description:The Ag receptors on alpha/beta and gamma/delta T cells differ not only in the nature of the ligands that they recognize but also in their signaling potential. We hypothesized that the differences in alpha/beta - and gamma/delta TCR signal transduction were due to differences in the intracellular signaling pathways coupled to these two TCRs. To investigate this, we employed transcriptional profiling to identify genes encoding signaling molecules that are differentially expressed in mature alpha/beta and gamma/delta T cell populations. Unexpectedly, we found that B lymphoid kinase (Blk), a Src family kinase expressed primarily in B cells, is expressed in gamma/delta T cells but not in alpha/beta T cells. Analysis of Blk-deficient mice revealed that Blk is required for the development of IL-17-producing gamma/delta T cells. Furthermore, Blk is expressed in lymphoid precursors and, in this capacity, plays a role in regulating thymus cellularity during ontogeny.
2010-09-23 | GSE24281 | GEO
Project description:TCR repertoire of pAg-stimulated cord blood and adult gamma delta T cells
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Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs.
2010-09-25 | GSE24338 | GEO
Project description:The beta2 integrin subunit (CD18) is thought to regulate gamma delta T cells in vivo. The objective of this study was to determine the gene expression changes mediated by loss of CD18 in lung gamma delta T cells. Single cell RNA sequencing was performed on gamma delta T cells (CD3+ gamma delta TCR+) isolated from the lungs of wild type C57BL/6 mice (N=2) and CD18 knockout (Itgb2-/-) mice (N=1).
2020-08-14 | E-MTAB-8732 | biostudies-arrayexpress