The role of N⁶-methyladenosine (m⁶A) mRNA modifications in herpesvirus infections

Area of Science:

• Virology
• Molecular Biology
• Epitranscriptomics

Background:

• Herpesviruses are large DNA viruses known for establishing persistent infections.
• These viruses engage in complex interactions with host cells.
• The epitranscriptome, particularly N6-methyladenosine (m⁶A) modifications, is a new frontier in understanding virus-host dynamics.

Purpose of the Study:

• To review the diverse strategies herpesviruses employ to modulate host m⁶A epitranscriptome.
• To elucidate how these manipulations impact viral replication and host antiviral responses.
• To highlight the potential for therapeutic interventions based on these interactions.

Main Methods:

• Literature review of studies on herpesvirus-m⁶A interactions.
• Analysis of mechanisms by which herpesviruses alter m⁶A methylation.
• Synthesis of findings on the role of m⁶A in viral persistence and host immune evasion.

Main Results:

• Herpesviruses utilize distinct strategies to interfere with, enhance, or exploit m⁶A methylation of viral and cellular transcripts.
• Modulation of m⁶A is frequently observed to suppress antiviral host responses.
• These viral strategies are conserved across different herpesvirus subfamilies.

Conclusions:

• Herpesviruses actively manipulate the host m⁶A epitranscriptome for their own benefit.
• Targeting these virus-host epitranscriptomic interactions offers promising avenues for antiviral drug development.
• Further research into m⁶A regulation by viruses will deepen our understanding of both viral pathogenesis and fundamental RNA biology.