Systematic name M6332
Brief description Genes up-regulated in spleen from mice injected with LPS: DUSP1 [GeneID=1843] knockout versus wildtype.
Full description or abstract Activation of the Mitogen activated protein kinase (MAPK) cascade following Toll-like receptor (TLR) stimulation enables innate immune cells to rapidly activate cytokine gene expression. A balanced response to signals of infectious danger requires that cellular activation is transient. Here, we identify the MAPK phosphatase Dual specificity phosphatase-1 (DUSP1) as an essential endogenous regulator of the inflammatory response to LPS. DUSP1-deficient (DUSP1-/-) bone marrow derived macrophages showed selectively prolonged activation of p38 MAPK and increased cytokine production. Intraperitoneal challenge of DUSP1-/- mice with LPS caused increased lethality and overshooting production of IL-6 and TNF-alpha. Transcriptional profiling revealed that DUSP1 controls a significant fraction of LPS-induced genes, that includes IL-6 and IL-10 as well as the chemokines CCL3, CCL4 and CXCL2. In contrast, the expression of the important mediators of endotoxin lethality, IFN-gamma and IL-12, was not significantly altered by the absence of DUSP1. These data together demonstrate a specific regulatory role of DUSP1 in controlling a subset of LPS-induced genes that determines the outcome of endotoxin shock.
Collection C7: Immunologic Signature
      IMMUNESIGDB: ImmuneSigDB
Source publication Pubmed 16380512   Authors: Hammer M,Mages J,Dietrich H,Servatius A,Howells N,Cato AC,Lang R
Exact source GSE3565_2624_200_UP
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Source species Mus musculus
Contributed by Jernej Godec (Dana-Farber Cancer Institute)
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Version history 7.3: Moved to ImmuneSigDB sub-collection.

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