Should pharmacologists care about alternative splicing? IUPHAR Review 4.

Area of Science:

• Molecular Biology
• Genetics
• Bioinformatics

Background:

• Alternative splicing is common in human genes, producing varied protein isoforms.
• Many splicing variations are rare and not fully characterized, especially for low-expressed genes.
• Quantifying full-length transcripts and significant exon combinations is challenging.

Purpose of the Study:

• To address the challenge of identifying and quantifying significant alternative splicing variants.
• To propose criteria for judging the biological significance of splice variants.
• To suggest standardized nomenclature for alternatively spliced transcripts.

Main Methods:

• Review of existing data on alternative splicing.
• Discussion of criteria for assessing variant abundance and functional relevance.
• Analysis of challenges in low-expression gene studies.

Main Results:

• Most genes undergo alternative splicing, yielding diverse protein products.
• Significant challenges exist in quantifying rare splice variants and their functional impact.
• Lack of standardized nomenclature hinders comparative studies.

Conclusions:

• Clear criteria are needed to evaluate the significance of alternative splicing variants.
• Standardized nomenclature is crucial for consistent reporting and research.
• Further research is required to accurately characterize splice variants, particularly in low-expression genes.