title: GSM9351969: PANC1-Vector3; Mus musculus; RNA-Seq
library_name: GSM9351969
library_construction_protocol: After sacrifice, mouse liver samples were likewise snap-frozen in liquid nitrogen and stored at −80℃. After the tissues were homogenized, total RNA was extracted employing Trizol reagent (Invitrogen, CA, USA). A total amount of 1 µg RNA per sample was used as input material for the RNA sample preparations. Sequencing libraries  for lncRNA-seq were prepared as rRNA depletion and stranded method. Briefly, the ribosomal RNA was depleted from total RNA using the rRNA Removal Kit following manufacturer's instruction. RNA was then fragmented into 250~300 bp fragments, and first strand cDNA was reversetranscribed using fragmented RNA and dNTPs . RNA was degraded using RNase H, and second strand cDNA was synthesised using DNA polymerase I and dNTPs. Remaining overhangs of double-strand cDNA were converted into blunt ends via exonuclease/ polymerase activities. After adenylation of 3' ends of DNA fragments,sequencing adaptors were ligated to the cDNA. In order to select cDNA fragments of preferentially 250~300 bp in length, the library fragments were purified with AMPure XP system. Uridine digestion was performed using Uracil-N-Glycosylase, which was followed by the cDNA amplification using PCR.