Next Generation Sequencing For Quantitative Analysis Of Hepatic Transcriptomes In Response To Squalene

Purpose: The goal of this study was to determine squalene effect on hepatic transcriptome by comparing high-throughput data for tested group vs. control group in Wildtype New Zealand white rabbits. Method: Hepatic mRNA profile of two Wildtype New Zealand white rabbits groups fed over 4 weeks with 1% of sunflower oil and the second fed with purified 1% of sunflower oil and 0.5% of squalene was analysed by Transcriptome sequencing using DNBseq platform. Sequence reads that passed quality filters were mapped onto reference genome, followed by SNP & INDEL calling and Gene expression detection. Results: Squalene intake did not significantly influence single nucleotide polymorphisms. When alternative splicing events were tested, squalene administration had significant influence on splicing events, alternative 5' splicing, alternative 3' splicing Site and retained intron while no effect was found on skipped exons or mutually exclusive exons. Splicing patterns led to variety of differentially splicing genes and a variety of different isoforms from one gene. Differentially expressed genes were 18,485 in the squalene group and 18,286 in the control group. Conclusions: This study represents the first analysis of hepatic transcriptome in respond to squalene. Result data confirm that RNA-Sequencing is a sensitive and accurate tool that provides a framework for comparative investigations of known and novel DEGs. Overall design: Testing the influence of 0.5% of squalene on hepatic gene expression in Wildtype New Zealand white rabbits groups fed with diet over 4 weeks