A Platform for Discovery and Quantification of Modified Ribonucleosides in RNA: Application to Stress-Induced...

Area of Science:

• Molecular Biology
• Biochemistry
• Genetics

Background:

• Modified ribonucleosides play critical roles in RNA function and cellular processes.
• Stress responses involve complex regulatory mechanisms, including translational control.
• Transfer RNA (tRNA) modifications are implicated in cellular adaptation to stress.

Purpose of the Study:

• To present a comprehensive analytical platform for the systems-level quantitative analysis of modified ribonucleosides in any RNA species.
• To detail the workflow for analyzing stress-induced reprogramming of tRNA in the context of translational control of cell stress response.
• To highlight strategies and potential pitfalls in each step of the analytical process to ensure data quality.

Main Methods:

• The platform involves seven key steps: RNA isolation, purification, hydrolysis to ribonucleosides, chromatographic resolution, identification, mass spectrometric quantification, and data interrogation.
• Specific focus on analytical sensitivity, specificity, precision, and accuracy for robust data generation.
• Methods are applicable to various RNA species, with a focus on tRNA modifications.

Main Results:

• A detailed seven-step workflow for the quantitative analysis of modified ribonucleosides is described.
• Strategies for ensuring the accuracy and reliability of data for modified ribonucleosides are emphasized.
• The platform facilitates the study of stress-sensitive modifications in tRNA.

Conclusions:

• The described analytical platform enables comprehensive, quantitative analysis of modified ribonucleosides across RNA species.
• This platform is essential for investigating the role of tRNA modifications in translational control during cellular stress response.
• The methods are broadly applicable to RNA modification studies, advancing our understanding of gene expression regulation.