Next-Generation Sequencing-Based RiboMethSeq  Protocol for Analysis of tRNA 2'-O-Methylation

Area of Science:

• Molecular Biology
• Genomics
• Bioinformatics

Background:

• Traditional RNA modification analysis is labor-intensive and requires substantial input material.
• Next-generation sequencing (NGS) offers new perspectives for analyzing cellular RNA species.
• The RiboMethSeq protocol, based on Illumina sequencing, was previously established for ribosomal RNA (rRNA) 2 -O-methylations.

Purpose of the Study:

• To evaluate the applicability of the RiboMethSeq protocol for analyzing transfer RNA (tRNA) 2 -O-methylation.
• To adapt and optimize the RiboMethSeq protocol and its bioinformatic pipeline for tRNA analysis.
• To enable global and quantitative analysis of tRNA modifications, crucial for understanding their functions.

Main Methods:

• Application of the RiboMethSeq protocol for tRNA 2 -O-methylation analysis.
• Optimization of the bioinformatic pipeline for processing and analyzing sequencing data from tRNAs.
• Utilizing Illumina sequencing technology for high-throughput RNA modification profiling.

Main Results:

• The RiboMethSeq protocol was successfully applied to analyze tRNA 2 -O-methylation in Escherichia coli and Saccharomyces cerevisiae.
• Optimization of the bioinformatic pipeline was crucial for adapting the method to tRNA analysis.
• The optimized RiboMethSeq protocol is suitable for the relative quantification of methylation rates at known modified positions in different tRNA species.

Conclusions:

• The RiboMethSeq protocol can be effectively adapted for the analysis of tRNA 2 -O-methylation.
• This adaptation expands the utility of RiboMethSeq beyond rRNA, enabling broader studies of RNA modifications.
• The optimized method provides a valuable tool for quantitative analysis of tRNA modifications, contributing to a deeper understanding of their roles in cellular processes.