In vivo and In vitro methods to identify DNA sequence variants that alter RNA Splicing

Area of Science:

• Genetics
• Molecular Biology
• Bioinformatics

Background:

• Identifying sequence variants that alter RNA splicing is crucial for interpreting rare genetic variations.
• Existing methods for detecting splice-altering variants are limited by incomplete knowledge of splicing signals and inefficient assays.

Purpose of the Study:

• To present a novel computational tool and minigene assay for accurate and efficient identification of splice-altering sequence variants.
• To provide detailed instructions for implementing this protocol in research and clinical settings.

Main Methods:

• Development of a computational tool to prioritize putative splice-altering sequence variants.
• Utilization of a moderate-throughput minigene assay to experimentally confirm variants affecting splicing.
• Detailed protocol for organizing, executing, and interpreting splicing assays.

Main Results:

• The combined bioinformatic and experimental strategy significantly improves accuracy and efficiency compared to traditional in vitro splicing assays.
• The protocol reliably identifies splice-altering variants.

Conclusions:

• This integrated approach enhances the detection of splice-altering variants, overcoming a key challenge in rare genetic variation analysis.
• Validated splice-altering variants can be confidently used for further clinical and biological investigations.