Project description:To test if A3B has RNA editing activity we performed SNV calling from WES of 8 mouse livers (Samples 1-8) and 8 pancreas (Samples 7-16)
Project description:To test if A3B has RNA editng activity we performed SNV calling from RNA-seq of 6 mouse lungs (Samples 7-12), 8 mouse livers (Samples 14-20) and 8 pancreas (Samples 21-28) We then performed gene expression profiling analysis using data obtained from RNA-seq of 6 mouse livers (Samples 1-6), 6 mouse lungs (Samples 7-12), 8 mouse livers (Samples 14-20) and 8 pancreas (Samples 21-28)
Project description:To investigate the function of A3B, we established 92.1 cell lines with A3B knocked down and MEL290 cell lines with A3B overexpression. We then performed gene expression profiling analysis using data obtained from RNA-seq of 4 different cell lines with two replicates.
Project description:RNA editing is a crucial post-transcriptional process that diversifies proteomic outcomes and influences gene expression. Particularly, the APOBEC3 family has emerged as a significant player in this mechanism, with APOBEC3A (A3A) showing notable roles in immune response and stress conditions. APOBEC3B (A3B), another family member, has garnered attention for its potential role in breast cancer genomic mutations. In this study, we employ an inducible expression cell model and a novel methodology for identifying differential variants in RNA (DVRs) to map A3B-mediated RNA editing sites in a breast cancer cell model. Our findings indicate that A3B engages in selective RNA editing and targets NEAT1 and MALAT1 long non-coding RNAs. Notably, the binding of these RNAs sequesters A3B’s catalytic activity, and thereby affects A3A’s activity through a feedback loop.