Human Gene Set: GSE11818_WT_VS_DICER_KO_TREG_DN


Standard name GSE11818_WT_VS_DICER_KO_TREG_DN
Systematic name M411
Brief description Genes down-regulated in T reg: wildtype versus DICER1 [GeneID=23405] knockout.
Full description or abstract A new Treg-specific, FoxP3-GFP-hCre BAC transgenic was crossed to a conditional Dicer knock-out mouse strain to analyze the role of microRNAs (miRNA) in the development and function of regulatory T cells (Tregs). Although thymic Tregs developed normally in this setting, the cells showed evidence of altered differentiation and dysfunction in the periphery. Dicer-deficient Treg lineage cells failed to remain stable as a subset of cells down-regulated the Treg-specific transcription factor, FoxP3, while the majority expressed altered levels of multiple genes and proteins (including Neuropilin 1, GITR and CTLA-4) associated with the Treg fingerprint. In fact, a significant percentage of the Treg lineage cells took on a Th memory phenotype including increased levels of CD127, IL-4, and interferon-g. Importantly, Dicer-deficient Tregs lost suppression activity in vivo; the mice rapidly developed fatal systemic autoimmune disease resembling the FoxP3 knockout phenotype. These results support a central role for miRNAs in maintaining the stability of differentiated Treg function in vivo and homeostasis of the adaptive immune system.
Collection C7: Immunologic Signature
      IMMUNESIGDB: ImmuneSigDB
Source publication Pubmed 18725525   Authors: Zhou X,Jeker LT,Fife BT,Zhu S,Anderson MS,McManus MT,Bluestone JA
Exact source GSE11818_3401_200_DN
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Source species Mus musculus
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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