title: GSM6235014: SKBR3 cells, VIRMA-overexpressing Input  replicate 1; Homo sapiens; RIP-Seq
library_construction_protocol: Freshly collected DC and Si8 from RedMUC298trTg mice were flushed with ice-cold HBSSwo (Mg2+/Ca2+ free supplemented with 10mM HEPES, pH 7.2) to remove luminal content. The tissue was inverted and inflated by injection of HBSSwo. Epithelial isolation was performed by incubation of tissue with pre-digestion buffer (HBSSwo, 5 mM EDTA, 5% v/v FCS, 1 mM DTT) in a shaking incubator. The isolated epithelial cells were resuspended in digestion buffer (HBSS with Mg2+/Ca2+ supplemented with 2 mg/ml collagenase type I and 40 U/ml DNase I) and incubated at 37 °C for 30 min. Cells were washed and re-suspended in PBS and stained with a Viability Dye, washed and resuspended in FACS buffer (HBSSwo, 2% v/v FCS, 5mM EDTA). Alive GCs were sorted using a FACS Jazz (Becton Dickinson) according to the presence or absence of mCherry signal using a C57Bl6 mouse as negative control. Goblet cells were washed in HBSS-/- and resuspended in HBSS-/- supplemented with 0.04% w/v BSA. Library preparation was performed using the SMARTER Stranded Total RNA Seq kit v2-Pico Input Mammalian kit (Takara Bio cat #634411) according to the manufacturers' instructions. Libraries were sequenced using HiSeq2500 (Illumina) at Novogene (China) to obtain at least 20 million paired-end reads per sample. Sequencing was performed in duplicates for each condition.