title: GSM1481330: 3h Sucrose control 1; Drosophila melanogaster; RNA-Seq
library_construction_protocol: At least 10 midguts were dissected per point and immediately placed in TRI Reagent® RT (Molecular Research Center) and crushed. RNAs were then extracted according to the manufacturer's protocol. A library of template molecules suitable for high throughput DNA sequencing was created following the Illumina “Truseq RNA sample preparation low throughput” protocol with some modifications. Briefly, mRNA was purified from 2 µg total RNA using oligo-dT magnetic beads and fragmented using divalent cations at 94°C for 8 minutes. The cleaved mRNA fragments were reverse transcribed to cDNA using random primers, then the second strand of the cDNA was synthesized using Polymerase I and RNase H. The next steps of RNA-Seq Library preparation were performed in a fully automated system using SPRIworks Fragment Library System I kit (ref A84801, Beckman Coulter, Inc) with the SPRI-TE instrument (Beckman Coulter, Inc). Briefly, in this system double stranded cDNA fragments were blunted, phosphorylated and ligated to indexed adapter dimers, and fragments in the range of ~200-400 bp were size selected. The automated steps were followed by PCR amplification (30 sec at 98°C; [10 sec at 98°C, 30 sec at 60°C, 30 sec at 72°C] x 13 cycles; 5 min at 72°C), then surplus PCR primers were removed by purification using AMPure XP beads (Agencourt Biosciences Corporation). DNA libraries were checked for quality and quantified using 2100 Bioanalyzer (Agilent).
attributes.tag: GEO Accession
attributes.value: GSM1481330