Human Gene Set: ZHOU_INFLAMMATORY_RESPONSE_FIMA_UP


Standard name ZHOU_INFLAMMATORY_RESPONSE_FIMA_UP
Systematic name M7140
Brief description Genes up-regulated in macrophages by P.gingivalis FimA pathogen.
Full description or abstract Porphyromonas gingivalis (P. gingivalis) can trigger an inflammatory condition leading to the destruction of periodontal tissues. However P. gingivalis LPS and its fimbriae (FimA) play different roles compared with the live bacteria in the context of intracellular molecule induction and cytokine secretion. To elucidate whether this difference results from different signaling pathways in host immune response to P. gingivalis, its LPS, or its FimA, we examined gene expression profile of human macrophages exposed to P. gingivalis, its LPS, or its FimA. A comparison of gene expression resulted in the identification of three distinct groups of expressed genes. Furthermore, computer-assisted promoter analysis of a subset of each group of differentially regulated genes revealed four putative transcriptional regulation models that associate with transcription factors NFkappaB, IRF7, and KLF4. Using gene knockout mice and siRNA to silence mouse genes, we showed that both TLR2 and TLR7 are essential for the induction of NFkappaB-containing genes and NFkappaB-IFN-sensitive response element (ISRE) cocontaining genes by either P. gingivalis or its purified components. The gene induction via either TLR2 or TLR7 is dependent on both MyD88 and p38 MAPK. However, the unique induction of IFN-beta by P. gingivalis LPS requires TLR7 and IFNalphabetaR cosignaling, and the induction of ISRE-containing gene is dependent on the activation of IFN-beta autocrine loop. Taken together, these data demonstrate that P. gingivalis and its components induce NFkappaB-containing genes through either TLR2- or TLR7-MyD88-p38 MAPK pathway, while P. gingivalis LPS uniquely induces ISRE-containing genes, which requires IFNalphabetaR signaling involving IRF7, KLF4, and pY701 STAT1.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18025224   Authors: Zhou Q,Amar S
Exact source Table 2S
Related gene sets (show 4 additional gene sets from the source publication)

(show 7 gene sets from any of these authors)
External links
Filtered by similarity ?
Source species Homo sapiens
Contributed by Arthur Liberzon (MSigDB Team)
Source platform or
identifier namespace		 AFFY_HG_U133
Dataset references  
Download gene set format: grp | gmt | xml | json | TSV metadata
Compute overlaps ? (show collections to investigate for overlap with this gene set)
Compendia expression profiles ? NG-CHM interactive heatmaps
(Please note that clustering takes a few seconds)
GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)

Legacy heatmaps (PNG)
GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)
Advanced query Further investigate these 516 genes
Gene families ? Categorize these 516 genes by gene family
Show members (show 643 source identifiers mapped to 516 genes)
Version history 3.0: First introduced

See MSigDB license terms here. Please note that certain gene sets have special access terms.