Human Gene Set: GSE6090_UNSTIM_VS_DC_SIGN_STIM_DC_DN


Standard name GSE6090_UNSTIM_VS_DC_SIGN_STIM_DC_DN
Systematic name M6812
Brief description Genes down-regulated in dendritic cells: control versus stimulated with anti-CD209 [GeneID=30835] antibody.
Full description or abstract DC-SIGN is a C-type lectin expressed by dendritic cells (DCs) that binds HIV-1, sequestering it within multivesicular bodies to facilitate transmission to CD4+ T cells. Here we characterize the molecular basis of signalling through DC-SIGN by large-scale gene expression profiling and phosphoproteome analysis. Solitary DC-SIGN activation leads to a phenotypically disparate transcriptional program from Toll-like receptor (TLR) triggering with downregulation of MHC II, CD86, and interferon response genes and with induction of the TLR negative regulator ATF3. Phosphoproteome analysis reveals DC-SIGN signals through the leukemia-associated Rho guanine nucleotide exchange factor (LARG) to induce Rho activity. This LARG activation also occurs on DC HIV exposure and is required for effective HIV viral synapse formation. Taken together HIV mediated DC-SIGN signalling provides a mechanism by which HIV evades the immune response yet induces viral spread.
Collection C7: Immunologic Signature
      IMMUNESIGDB: ImmuneSigDB
Source publication Pubmed 17496896   Authors: Hodges A,Sharrocks K,Edelmann M,Baban D,Moris A,Schwartz O,Drakesmith H,Davies K,Kessler B,McMichael A,Simmons A
Exact source GSE6090_2631_200_DN
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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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