|
| Status |
Public on Feb 12, 2008 |
| Title |
Activation of aryl hydrocarbon receptor |
| Organism |
Homo sapiens |
| Experiment type |
Expression profiling by array
|
| Summary |
VAF347 is a low molecular weight compound which inhibits allergic lung inflammation in vivo. This effect is likely due to a block of dendritic cell (DC) function to generate pro-inflammatory T-helper (Th) cells since VAF347 inhibits IL-6, CD86 and HLA-DR expression by human monocyte derived DC, three relevant molecules for Th-cell generation. Here we demonstrate that VAF347 interacts with the aryl hydrocarbon receptor (AhR) protein resulting in activation of the AhR signaling pathway. Functional AhR is responsible for the biological activity of VAF347 since, i) other AhR agonists display an identical activity profile in vitro, ii) gene silencing of wild type AhR expression or forced over-expression of a trans-dominant negative AhR ablates VAF347 activity to inhibit cytokine induced IL-6 expression in a human monocytic cell line and iii) AhR deficient mice are resistant to the compound’s ability to block allergic lung inflammation in vivo. These data identify the AhR protein as key molecular target of VAF347 and its essential role for mediating the anti-inflammatory effects of the compound in vitro and in vivo.
Keywords: effect of compound
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| Overall design |
Immature monocyte-derived DC were activated with anti-CD40 antibodies for 8 hours in the absence or presence of VAF347. Two donors (D1,D2) were used, resulting in four data sets: D1_ctrl, D2_ctrl (ctrl=no treatment), D1_VAF347, D2_VAF347.
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| Contributor(s) |
Lawrence BP, Denison MS, Novak H, Vorderstrasse BA, Harrer N, Neruda W, Reichel C, Woisetschläger M |
| Citation(s) |
18270326 |
| |
| Submission date |
Feb 11, 2008 |
| Last update date |
Mar 25, 2019 |
| Contact name |
Meinrad Busslinger |
| E-mail(s) |
meinrad.busslinger@imp.ac.at
|
| Organization name |
IMP
|
| Lab |
Busslinger
|
| Street address |
Campus-Vienna-Biocenter 1
|
| City |
Vienna |
| ZIP/Postal code |
A-1030 |
| Country |
Austria |
| |
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| Platforms (1) |
| GPL570 |
[HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array |
|
| Samples (4)
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| Relations |
| BioProject |
PRJNA108019 |
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