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Deciphering DNA Methylation in HIV Infection
Thilona Arumugam1, Upasana Ramphal1,2,3, Theolan Adimulam1
1School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
Frontiers in Immunology
|December 20, 2021
Summary
DNA methylation, an epigenetic factor, influences HIV infection by altering gene expression. This review explores its role in HIV pathogenesis and potential as a novel therapeutic strategy and biomarker.
Area of Science:
- Epigenetics and Virology
- Molecular Biology
Background:
- HIV/AIDS affects millions globally, necessitating deeper understanding of infection factors.
- Host genetic factors are well-studied, but epigenetic factors like DNA methylation are increasingly recognized.
- DNA methylation, a key epigenetic mechanism, impacts both viral and host elements in HIV infection.
Purpose of the Study:
- To review the role of DNA methylation in HIV infection.
- To examine how HIV infection affects methylation modifying factors.
- To explore DNA methylation's impact on viral and host genes, and its potential as an epi-therapeutic strategy and biomarker.
Main Methods:
- Literature review focusing on DNA methylation in HIV.
- Analysis of how methylation affects HIV viral genes and the host genome.
- Examination of DNA methylation's role in other diseases for comparative insights.
Main Results:
- HIV infection alters the expression of methylation modifying factors.
- DNA methylation influences the expression of HIV viral genes and the host genome.
- Identified HIV-associated host genes regulated by methylation in other disease models.
Conclusions:
- DNA methylation is a critical epigenetic regulator in HIV infection.
- It holds significant potential as a non-genetic therapeutic intervention and precision biomarker for HIV.
- Overcoming drug resistance and irreversible genetic therapies requires novel approaches like DNA methylation-based treatments.

