Detection of splice isoforms and rare intermediates using multiplexed primer extension sequencing.

Area of Science:

• Molecular Biology
• Genomics
• Biotechnology

Background:

• Standard RNA sequencing (RNA-seq) often provides insufficient coverage for specific genomic regions of interest.
• Targeted RNA sequencing methods aim to improve focus and depth in selected areas.

Purpose of the Study:

• To introduce and validate multiplexed primer extension sequencing (MPE-seq) as an advanced targeted RNA sequencing approach.
• To enable high-precision detection of splice isoforms and pre-mRNA splicing intermediates.

Main Methods:

• Developed MPE-seq, a targeted RNA sequencing technique utilizing complex pools of reverse-transcription primers.
• Applied MPE-seq to target hundreds to thousands of pre-mRNA splice junctions across the genome.

Main Results:

• Achieved significant sequencing enrichment at user-selected genomic locations.
• Demonstrated high-precision detection of various splice isoforms.
• Successfully identified rare pre-mRNA splicing intermediates.

Conclusions:

• MPE-seq offers a powerful tool for in-depth analysis of specific RNA targets.
• The method enhances the study of complex splicing events and rare isoforms.