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Series GSE17344 Query DataSets for GSE17344
Status Public on Jul 29, 2009
Title Analysis of spatial mRNA expression differences in the skin of Casp-8F/–K5-Cre or Casp-8F/+K5-Cre mice
Organism Mus musculus
Experiment type Expression profiling by array
Summary Expression of enzymatically inactive caspase-8, or deletion of caspase-8 from basal epidermal keratinocytes, triggers chronic skin inflammation in mice. Unlike similar inflammation resulting from arrest of NF-kB activation in the epidermal cells, the effect induced by caspase-8 deficiency did not depend on TNF, IL1, dermal macrophage function, or expression of the Toll-like receptor adapter proteins MyD88 or TRIF. Both interferon regulatory factor (IRF)3 and TANK-binding kinase were constitutively phosphorylated in the caspase-8-deficient epidermis, and knockdown of IRF3 in the epidermis-derived cells from these mice abolished the expression of upregulated genes. Temporal and spatial analyses of the alterations in gene expression that result from caspase-8 deficiency reveal that the changes are initiated before birth, around the time that cornification develops, and occur mainly in the suprabasal layer. Finally, we found that caspase-8-deficient keratinocytes display an enhanced response to gene activation by transfected DNA. Our findings suggest that an enhanced response to endogenous activators of IRF3 in the epidermis, presumably generated in association with keratinocyte differentiation, contributes to the skin inflammatory process triggered by caspase-8 deficiency.
Overall design Total RNA was extracted from the dermis or epidermis derived from Casp-8F/–K5-Cre and Casp-8F/+K5-Cre mice at P3. RNA from two or three mice of each genotype was pooled prior to sample processing for microarray analysis. The appropriate pairs of RNA samples suited for a direct comparison of the two different genotypes under examination were differently labeled and subsequently co-hybridized onto one microarray (dual color design).
Contributor(s) Kovalenko A, Kim J, Kang T, Rajput A, Bogdanov K, Dittrich-Breiholz O, Kracht M, Brenner O, Wallach D
Citation(s) 19720838
Submission date Jul 27, 2009
Last update date Dec 06, 2012
Contact name Oliver Dittrich-Breiholz
Organization name Medical School Hannover
Department Research Core Unit Genomics
Street address Carl-Neuberg-Str. 1
City Hannover
ZIP/Postal code 30625
Country Germany
Platforms (1)
GPL2881 Agilent-013326 Mouse Oligo Microarray (V2) G4121B (Feature Number version)
Samples (2)
GSM433649 Epidermal mRNA expression differences between Casp-8F/–K5-Cre and Casp-8F/+K5-Cre mice.
GSM433650 Dermal mRNA expression differences between Casp-8F/–K5-Cre and Casp-8F/+K5-Cre mice.
This SubSeries is part of SuperSeries:
GSE17365 Analysis of mRNA expression differences in the skin of Casp-8F/–K5-Cre and Casp-8F/+K5-Cre mice
BioProject PRJNA123607

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE17344_RAW.tar 18.9 Mb (http)(custom) TAR (of TXT)
Processed data included within Sample table

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