roar

roar identifies differential usage of alternative polyadenylation (APA) sites between two biological conditions using known APA site annotations and RNA-seq alignments.

Key Features:

• Alternative Polyadenylation Analysis: Identifies preferential usage patterns of alternative polyadenylation (APA) sites across conditions to interrogate gene regulation at the 3' end of transcripts.
• RNA-Seq Data Utilization: Uses alignments from standard RNA-seq experiments as input to quantify usage at annotated APA sites.
• Comparative Analysis: Compares two biological conditions to detect differential APA site preferences between those conditions.
• Integration with Bioconductor: Provided as part of the Bioconductor project for use within the Bioconductor ecosystem.

Scientific Applications:

• Gene Expression Regulation: Enables investigation of how alternative polyadenylation alters mRNA isoform composition and potential downstream protein diversity.
• Disease Research: Facilitates identification of differential APA usage associated with diseases such as cancer, supporting biomarker and mechanism discovery.
• Developmental Biology: Supports comparison of developmental stages or conditions to study APA’s contributions to developmental regulation.

Methodology:

Requires known alternative APA site annotations and RNA-seq alignments as input and employs a comparative framework to analyze APA site usage between two biological conditions; provided within the Bioconductor project.