Human Gene Set: GSE3720_UNSTIM_VS_PMA_STIM_VD2_GAMMADELTA_TCELL_UP


Standard name GSE3720_UNSTIM_VS_PMA_STIM_VD2_GAMMADELTA_TCELL_UP
Systematic name M6340
Brief description Genes up-regulated in Vd2 gamma delta T cells: untreated versus phorbol myristate acetate and ionomycin [PubChem=4792;3733].
Full description or abstract The two major human gd T cell subsets, Vd1 and Vd2, display differences in tissue tropism and agonist responses, but we have little insight into global differences that may exist at the gene expression level. This is due to the small numbers of these cells that can be obtained from healthy donors, which limit comprehensive, comparative gene expression analyses. We established a culture method that expands Vd1 and Vd2 cells from the same PBL preparation to levels sufficient for sorting and microarray analysis. Although the subsets were expanded identically (anti-TCR mAb, plus IL-15), 392 and 614 genes were identified, which were differentially expressed in the two subsets, from two donors, respectively. Approximately 4,500 genes changed in both subsets following PMA/ionomycin treatment; about 50% of these genes were subset-specific. Both subsets responded to a crude LPS preparation, but only 6% of the responsive genes were the same. The differentially expressed genes were consistent with Vd2 cells being more inflammatory and Vd1 cells having more of a regulatory phenotype. Both subsets expressed transcripts encoding an array of innate and NK cell receptors, supporting the relationship of gd T cells to the innate immune system. Our results show that circulating Vd1 and Vd2 subsets in humans have considerable, inherent differences in gene expression following treatment with non-TCR agonists, supporting unique functional roles for these cells in vivo.
Collection C7: Immunologic Signature
      IMMUNESIGDB: ImmuneSigDB
Source publication Pubmed 16423401   Authors: Kress E,Hedges JF,Jutila MA
Exact source GSE3720_3347_200_UP
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Source species Homo sapiens
Contributed by Jernej Godec (Dana-Farber Cancer Institute)
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identifier namespace		 HUMAN_GENE_SYMBOL
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Version history 7.3: Moved to ImmuneSigDB sub-collection.

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