Toward a Cure: Does Host Immunity Play a Role?

Area of Science:

• Virology
• Immunology
• Epigenetics

Background:

• Decades of research on human immunodeficiency virus (HIV) and Acquired Immunodeficiency Syndrome (AIDS) have illuminated the complex interplay between the virus and the host.
• The human genome has evolved intrinsic defense mechanisms, including epigenetic regulation, against pathogenic nucleic acid invasions.

Purpose of the Study:

• To investigate the role of the host genome's epigenetic regulation in controlling HIV infection and Acquired Immunodeficiency Syndrome (AIDS) pathogenesis.
• To propose harnessing the host genome's immune system, termed epigenetic immunity, as a novel strategy for an HIV cure.

Main Methods:

• Review of existing research on HIV/AIDS pathogenesis and epigenetic mechanisms.
• Analysis of viral RNA levels in human hosts to identify biomarkers of epigenetic regulation.
• Comparative analysis of viral load differences among individuals, including elite controllers, posttreatment controllers, and patients with AIDS.

Main Results:

• Epigenetic regulation within the human genome plays a critical role in managing HIV RNA production, viral load, and the clinical progression of AIDS.
• Significant variations in viral RNA levels among individuals highlight the importance of epigenetic regulation, often overlooked in favor of innate and adaptive immunity explanations.
• Observed differences in viral control (elite controllers, posttreatment controllers, AIDS patients) are signature biomarkers of effective or dysregulated epigenetic control.

Conclusions:

• Epigenetic immunity, a facet of the host genome's defense system, is pivotal in managing HIV infection.
• Current understanding of AIDS pathogenesis has underemphasized the role of epigenetic regulation.
• Targeting and harnessing epigenetic immunity presents a promising therapeutic avenue for achieving a cure for HIV/AIDS.