title: GSM7770113: WT_Heart_1; Mus musculus; RNA-Seq
library_name: GSM7770113
library_construction_protocol: RNA was extracted from heart, liver, diaphragm and gastrocnemius samples using TRI Reagent (Molecular Research Center, Cincinnati, OH, USA), and precipitated in a mix of sodium acetate (0,1 vol) and ethanol (2,5 vol). RNA-Seq libraries were generated from 350 ng of total RNA using TruSeq Stranded mRNA Library Prep Kit and TruSeq RNA Single Indexes kits A and B (Illumina, San Diego, CA), according to manufacturer's instructions. Briefly, following purification with poly-T oligo attached magnetic beads, the mRNA was fragmented using divalent cations at 94oC for 2 minutes. The cleaved RNA fragments were copied into first strand cDNA using reverse transcriptase and random primers. Strand specificity was achieved by replacing dTTP with dUTP during second strand cDNA synthesis using DNA Polymerase I and RNase H. Following addition of a single 'A' base and subsequent ligation of the adapter (IDT for IlluminaXTruSeq RNA UD Indexes) on double stranded cDNA fragments, the products were purified and enriched with PCR (30 sec at 98oC; [10 sec at 98oC, 30 sec at 60oC, 30 sec at 72oC] x 12 cycles; 5 min at 72oC) to create the cDNA library. Surplus PCR primers were further removed by purification using AMPure XP beads (Beckman-Coulter, Villepinte, France) and the final cDNA libraries were checked for quality and quantified using capillary electrophoresis.