Assay for transposase-accessible chromatin-sequencing (ATAC-seq) of liver samples in Wtapflox/flox and hepatocyte-specific Wtap knockout (Wtap-HKO) mice

Purpose: The goal of this study is to determine whether hepatic deletion of Wtapaffects chromatin accessibility. Methods: Each liver sample was pooled from three Wtap-HKO and Wtapflox/flox mice, respectively. Three independent biological replicates of each group were used for ATAC-seq. Nuclei was extracted from liver samples, and the nuclei pellet was resuspended in the Tn5 transposase reaction mix. The transposition reaction was incubated at 37°C for 30 min. Equimolar Adapter1 and Adatper 2 were added after transposition, PCR was then performed to amplify the library. After the PCR reaction, libraries were purified with the AMPure beads and library quality was assessed with Qubit. The clustering of the index-coded samples was performed on a cBot Cluster Generation System using TruSeq PE Cluster Kit v3-cBot-HS (Illumina) according to the manufactuer's instructions. After cluster generation, the library preparations were sequenced on an Illumina NovaSeq 6000 platform and 150 bp paired-end reads were generated. ATAC-seq analysis was performed using a standard protocol. Results: The hepatic chromatin accessibility in Wtapflox/flox and Wtap-HKO mice were characterized. Overall design: To assess chromatin accessibility in the liver casued by hepatic deletion of Wtap, ATAC-seq analysis of liver samples in Wtapflox/flox and hepatocyte-specific Wtap knockout (Wtap-HKO) mice was performed.