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Updated: Jan 4, 2026

Exploring m6A and m5C Epitranscriptomes upon Viral Infection: an Example with HIV
Published on: March 5, 2022
Association of N6-methyladenosine with viruses and related diseases
Fang Wu1,2, Wenzhao Cheng3,4, Feiyuan Zhao1,2
1Engineering Research Center of Molecular Medicine, Ministry of Education, Huaqiao University, Xiamen, China.
Background:
N6-methyladenosine (m6A) modification is the most prevalent internal modification of eukaryotic mRNA modulating gene expression. m6A modification is a dynamic reversible process regulated by three protein groups: methyltransferases (writers), demethylases (erasers), and m6A-binding proteins (readers). m6A modification is involved in all phases of RNA metabolism, including RNA folding, stability, splicing, nuclear exporting, translational modulation and degradation.
Main Body:
In recent years, numerous studies have reported that abnormal m6A modification causes aberrant expression of important viral genes. Herein, we review the role of m6A in viral lifecycle and its contribution to the pathogenesis of human diseases. Particularly, we focus on the viruses associated with human diseases such as HIV-1, IAV, HBV, HCV, EBV and many others.
Conclusions:
A better understanding of m6A-virus relationship would provide new insights into the viral replication process and pathogenesis of human diseases caused by viruses. In addition, exploration of the role of m6A in disease-causing viruses will reveal novel approaches for the treatment of such diseases.
Insights
N6-methyladenosine (m6A) modification regulates gene expression and is implicated in viral infections. Understanding the m6A-virus relationship offers new therapeutic strategies for viral diseases.
Area of Science:
- Molecular Biology
- Virology
- Epigenetics
Background:
- N6-methyladenosine (m6A) is the most common internal modification in eukaryotic mRNA.
- m6A regulates gene expression through writers, erasers, and readers, impacting RNA metabolism.
- m6A plays a role in RNA folding, stability, splicing, nuclear export, translation, and degradation.
Purpose of the Study:
- To review the role of m6A in the viral lifecycle.
- To explore m6A's contribution to the pathogenesis of human diseases caused by viruses.
- To highlight viruses like HIV-1, IAV, HBV, HCV, and EBV where m6A is implicated.
Main Methods:
- Literature review of studies on m6A modification in viruses.
- Analysis of m6A's impact on viral gene expression and replication.
- Synthesis of current knowledge on m6A-virus interactions.
Main Results:
- Abnormal m6A modification is linked to aberrant expression of viral genes.
- m6A influences multiple stages of viral replication and pathogenesis.
- Specific viruses like HIV-1, IAV, HBV, HCV, and EBV demonstrate significant m6A involvement.
Conclusions:
- Understanding the m6A-virus relationship provides insights into viral replication and disease pathogenesis.
- m6A's role in disease-causing viruses suggests novel therapeutic targets.
- Further research into m6A modification could lead to new treatments for viral infections.
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