Male, Wistar, 6 hrs/day access to cocaine, ventral tegmental area
Extracted molecule
total RNA
Extraction protocol
Total RNAs of regions of interest were prepared with an RNeasy miniprep kit according to manufacturer's (Qiagen, Valencia, CA) protocol. RNA was quantified by using the NanoDrop ND-1000 spectrophotometer (NanoDrop Technologies, Wilmington, DE), and quality was assessed with a 2100 Bioanalyzer (Agilent Technologies, Palo Alta, CA) and with agarose gel electrophoresis. Depending on the brain region, between 1 and 5 µg of total RNA was used to prepare double-stranded cDNA with a cDNA synthesis kit (GIBCO/BRL) for first and second strand. Biotinylated cRNA was generated from these cDNAs with a BioArray high-yield RNA transcript labeling kit (Enzo Life Sciences). It was then purified with RNeasy spin columns (Qiagen) and fragmented before hybridization
Label
biotin
Label protocol
Approximately 1 to 5 µg of total RNA was processed to produce biotinylated cRNA targets.
Hybridization protocol
standard Affymetrix procedures
Scan protocol
standard Affymetrix procedures
Description
long access to cocaine, ventral tegmental area, 6 hrs/day access to cocaine
