tissue: whole blood cell type: CD4+ T cells sirna: STAT3
Growth protocol
Human CD4+ T cells (hBP CD4+ T cells, 2W-200, Lonza, Vallensbak Strand, Denkmark) were nucleofected either with nucleofection buffer, 1 µM human on target plus SMART pool siRNA against ELK1, GATA3, NFATC3, MAF, NFKB1, JUN, STAT3 (Dharmacon, Lafayette, CO) or non-targeting siRNA using the AMAXA nucleofection program U-014. Six hours after then nucleofection cells were washed, activated and polarized towards Th2. The CD4+ cells were activated with plate bound anti-CD3 (500ng / ml for coating of the plate), with soluble anti-CD28 (500ng / ml) and with IL-2 (17ng /ml, all purchased from R&D). Th2 polarization was induced with anti-IL-12 (5µg/ml) and IL-4 (10ng / ml). For RT-PCR and microarray analyisis the cells were harvested 12 hours of polarization and total RNA was extracted.
Extracted molecule
total RNA
Extraction protocol
Total RNA was extracted using the miRneasy Mini Kit (Qiagen, Valencia,CA, USA).
Label
Cy3
Label protocol
Cyanine-3 (Cy3) labeled cRNA was prepared from 75ng total RNA using a Low Input QuickAmp Labeling Kit (Agilent Technologies, Palo Alto, Calif, USA) according to the manufacturer's instructions, followed by RNAeasy column purification (QIAGEN, Valencia, CA). Dye incorporation and cRNA yield were checked with the NanoDrop ND-1000 Spectrophotometer.
Hybridization protocol
600 ng of Cy3-labelled cRNA (specific activity >6 pmol Cy3/ug cRNA) was fragmented at 60°C for 30 minutes in a total volume of 25ul following the manufacturers instructions. On completion of the fragmentation reaction, 25ul of 2x Agilent hybridization buffer was added to the fragmentation mixture and hybridized to Agilent Whole Human Genome Oligo Microarrays (G4851A) for 17 hours at 65°C in a rotating Agilent hybridization oven. After hybridization, microarrays were washed 1 minute at room temperature with GE Wash Buffer 1 (Agilent) and 1 minute with 37°C GE Wash buffer 2 (Agilent), then dried immediately by brief centrifugation.
Scan protocol
Slides were scanned immediately after washing on the Agilent DNA Microarray Scanner using one color scan setting for 8x60k array slides.
Data processing
The scanned images were analyzed with Feature Extraction Software (Agilent). Features flagged in Feature Extraction as Feature Non-uniform outliers were excluded. The raw data was extracted and quantile normalized using GeneSpring GX software.
