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Updated: Jun 23, 2025

Exploring m6A and m5C Epitranscriptomes upon Viral Infection: an Example with HIV
Published on: March 5, 2022
Recent insights into N6-methyladenosine during viral infection
Stacy M Horner1, Jordan V Reaves2
1Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC 27710, USA; Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA.
Abstract:
The RNA modification of N6-methyladenosine (m6A) controls many aspects of RNA function that impact biological processes, including viral infection. In this review, we highlight recent work that shapes our current understanding of the diverse mechanisms by which m6A can regulate viral infection by acting on viral or cellular mRNA molecules. We focus on emerging concepts and understanding, including how viral infection alters the localization and function of m6A machinery proteins, how m6A regulates antiviral innate immunity, and the multiple roles of m6A in regulating specific viral infections. We also summarize the recent studies on m6A during SARS-CoV-2 infection, focusing on points of convergence and divergence. Ultimately, this review provides a snapshot of the latest research on m6A during viral infection.
Insights
N6-methyladenosine (m6A) RNA modification impacts viral infections by altering viral and cellular mRNA. This review details m6A
Area of Science:
- Molecular Biology
- Virology
- Epigenetics
Background:
- N6-methyladenosine (m6A) is a prevalent RNA modification.
- m6A influences RNA metabolism and function.
- m6A plays a role in host-pathogen interactions.
Purpose of the Study:
- To review the mechanisms of m6A in viral infection.
- To highlight emerging concepts in m6A regulation of viruses.
- To summarize m6A's role in SARS-CoV-2 infection.
Main Methods:
- Literature review of recent studies.
- Analysis of m6A's impact on viral and cellular mRNA.
- Focus on m6A machinery proteins and innate immunity.
Main Results:
- m6A regulates viral infection through diverse mechanisms.
- Viral infection alters m6A machinery protein localization and function.
- m6A modulates antiviral innate immunity.
- Specific viral infections are differentially regulated by m6A.
Conclusions:
- m6A is a critical regulator of viral infections.
- Understanding m6A's role in SARS-CoV-2 provides insights.
- This review offers a snapshot of current m6A research in virology.
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