Validation strategies for antibodies targeting modified ribonucleotides

Area of Science:

• Molecular Biology
• Biochemistry
• Genetics

Background:

• Chemical modifications on RNA are prevalent and influence gene expression.
• While N6-methyladenosine (m6A) is well-studied, other mRNA modifications (m1A, m5C, m7G, 2'-OMe, Ψ) are less understood due to low abundance and tool limitations.
• Current antibody-based detection methods often lack rigorous characterization of affinity and specificity, complicating the interpretation of results.

Purpose of the Study:

• To address the challenge of identifying and validating low-abundance RNA modifications.
• To develop and present a comprehensive experimental toolbox for assessing antibody performance in RNA modification detection.
• To ensure the reliability and physiological relevance of data generated for RNA modification studies.

Main Methods:

• Development of an experimental toolbox for antibody validation.
• Application of complementary approaches to rigorously test antibody affinity and specificity.
• Focus on characterization of antibodies used for detecting low-abundance RNA modifications on mRNAs.

Main Results:

• The provided toolbox enables thorough evaluation of antibody performance.
• Demonstration of critical steps for validating tools used in RNA modification research.
• Facilitation of reliable detection of various RNA modifications, including those present at low levels.

Conclusions:

• Rigorous antibody validation is essential for accurate RNA modification studies.
• The developed experimental toolbox enhances the reliability of detecting RNA modifications.
• This work supports the accurate investigation of the physiological roles of diverse RNA modifications.