For mouse skin, total RNA was isolated as stated above. For human PBMCs, total RNA was isolated from PBMC pellets with a Trizol extraction system (TriFast, PEQLAB GmbH, Erlangen, Germany), cDNA synthesis and quantitative RT-PCR was performed as previously described69 (link),70 (link). The Applied Biosystems StepOne Real-Time PCR system (Applied Biosystems, Forster City, CA) and TaqMan® Fast Universal PCR Master Mix for TaqMan assays (Applied Biosystems) were used for analysis. β-actin and cyclophilin were used as internal housekeeping controls and the quantitative analysis was performed with the ΔΔCT method. The following TaqMan® Gene Expression Assays (Applied Biosystems) were used: mouse Actb (Mm00607939_s1), mouse Tnf (Mm00443258_m1), human TNF (Hs99999043_m1), human PPIA (Hs99999904_m1).
All pre-clinical experimental analyses were performed in a blinded manner.
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