Fluorescence Reporter-Based Genome-Wide RNA Interference Screening to Identify Alternative Splicing Regulators

Area of Science:

• Molecular Biology
• Genetics
• Cell Biology

Background:

• Alternative splicing generates protein diversity from a single gene, with over 90% of human genes undergoing this process.
• While in vitro methods offer insights, a comprehensive understanding of alternative splicing regulation remains incomplete.
• Genome-wide RNA interference (RNAi) screening has emerged as a powerful tool for large-scale loss-of-function studies.

Purpose of the Study:

• To present a method for identifying alternative splicing regulators using genome-wide RNAi screening.
• To describe subsequent assays for validating identified regulatory candidates.
• To adapt the method for studying complex pre-mRNAs with multiple splice isoforms.

Main Methods:

• Utilizing genome-wide RNA interference (RNAi) screening for loss-of-function analysis.
• Implementing assays for the validation of potential alternative splicing regulators.
• Adapting screening protocols for multi-isoform pre-mRNA studies.

Main Results:

• Identification of novel regulators governing alternative splicing events.
• Uncovering previously unknown mechanisms controlling alternative splicing.
• Demonstration of RNAi screening's utility in dissecting gene regulation.

Conclusions:

• Genome-wide RNAi screening is effective for discovering alternative splicing regulators.
• The described methodology enhances the study of gene expression and protein diversity.
• This approach holds potential for identifying new cellular pathways and therapeutic targets.