Interplays of different types of epitranscriptomic mRNA modifications

Area of Science:

• Molecular Biology
• Epigenetics
• Gene Expression Regulation

Background:

• Eukaryotic messenger RNAs (mRNAs) undergo diverse chemical modifications.
• These modifications critically influence mRNA biology, gene expression, cellular metabolism, and organismal survival.
• Key modifications include N6-methyladenosine (m⁶A) and ADAR RNA editing, with others like m⁶Am, m⁵C, m¹A, and pseudouridine (Ψ) gaining attention.

Purpose of the Study:

• To provide a comprehensive overview of current research on mRNA modifications.
• To elucidate the functional relationships and crosstalk between different mRNA marks.
• To highlight the functional consequences arising from these interactions.

Main Methods:

• Literature review of recent studies on mRNA modifications.
• Analysis of enzyme families involved in deposition (writers), recognition (readers), and removal (erasers) of marks.
• Synthesis of findings on the interplay between different modification types.

Main Results:

• Detailed description of various mRNA modifications, including m⁶A, ADAR editing, m⁶Am, m⁵C, m¹A, and Ψ.
• Identification of specific writer, reader, and eraser enzymes for each modification type.
• Evidence of functional crosstalk between different mRNA modifications.

Conclusions:

• mRNA modifications are integral to eukaryotic gene regulation and cellular processes.
• The interplay between different marks significantly impacts mRNA function and biological outcomes.
• Further research into these complex interactions is crucial for understanding gene expression and development.