GSM8251032: DO400_M_21_GT20_00267_skeletal muscle; Mus musculus; RNA-Seq
RNA was isolated from tissue using the MagMAX mirVana Total RNA Isolation Kit (ThermoFisher) and the KingFisher Flex purification system (ThermoFisher). Frozen tissues were pulverized using a Bessman Tissue Pulverizer (Spectrum Chemical) and homogenized in TRIzol (ThermoFisher Scientific) using a gentleMACS dissociator (Miltenyi Biotec Inc). After the addition of chloroform to the TRIzol homogenate, the RNA-containing aqueous layer was removed for RNA isolation, according to the manufacturer's protocol, beginning with the RNA bead binding step. 2 ul of diluted (1:1000) ERCC Spike-in Control Mix 1 (Ambion by Life Technologies) was added to 100ng of each RNA sample prior to library construction. Libraries were constructed using the KAPA mRNA HyperPrep Kit (Roche Sequencing and Life Science), according to the manufacturer's protocol. Briefly, the protocol entails isolation of polyA containing mRNA using oligo-dT magnetic beads, RNA fragmentation, first and second strand cDNA synthesis, ligation of Illumina-specific adapters containing a unique barcode sequence for each library, and PCR amplification. The quality and concentration of the libraries were assessed using the D5000 ScreenTape (Agilent Technologies) and Qubit dsDNA HS Assay (ThermoFisher), respectively, according to the manufacturers' instructions.