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Advances in HIV Research Using Mass Cytometry
Ashley F George1,2, Nadia R Roan3,4
1Gladstone Institute of Virology, Gladstone Institutes, San Francisco, CA, 94158, USA.
Insights
Advances in Cytometry by Time-Of-Flight (CyTOF) and high-dimensional analysis enhance understanding of HIV infection, revealing insights into viral persistence, pathogenesis, and immune responses.
Area of Science:
- Immunology
- Virology
- Biotechnology
Background:
- Human Immunodeficiency Virus (HIV) infection remains a significant global health challenge.
- Understanding HIV pathogenesis, persistence, and immune evasion is crucial for developing effective treatments and cures.
- High-dimensional single-cell analysis technologies are revolutionizing our ability to dissect complex biological systems.
Purpose of the Study:
- To review how Cytometry by Time-Of-Flight (CyTOF) and advanced analytical methods have improved the understanding of HIV biology.
- To highlight key findings regarding HIV transmission, pathogenesis, viral reservoirs, and host immune responses.
- To underscore the translational potential of these technologies in HIV research.
Main Methods:
- Cytometry by Time-Of-Flight (CyTOF) for high-dimensional single-cell analysis.
- Advanced computational and statistical methods for analyzing complex datasets.
- Application of these methods to studies of HIV-infected cells and immune responses in various infection contexts.
Main Results:
- CyTOF elucidates differences between HIV-permissive and latently infected cells, and HIV-induced cellular remodeling.
- Identified factors contributing to the persistence of long-term HIV reservoirs in blood and tissues.
- Detailed the impact of HIV on the immune system during uncontrolled and controlled infections.
- Revealed host antigen remodeling by HIV and features of HIV-infected cells promoting survival and persistence.
- Characterized immune cells capable of responding to and controlling HIV replication.
Conclusions:
- CyTOF and high-dimensional analysis provide powerful tools for in-depth assessment of HIV-infected cells and immune responses.
- These technologies offer critical insights into HIV pathogenesis, persistence, and immune dynamics.
- Future applications in cohort studies can identify biomarkers for HIV eradication or control, advancing translational research.
Purpose Of Review:
This review describes how advances in CyTOF and high-dimensional analysis methods have furthered our understanding of HIV transmission, pathogenesis, persistence, and immunity.
Recent Findings:
CyTOF has generated important insight on several aspects of HIV biology: (1) the differences between cells permissive to productive vs. latent HIV infection, and the HIV-induced remodeling of infected cells; (2) factors that contribute to the persistence of the long-term HIV reservoir, in both blood and tissues; and (3) the impact of HIV on the immune system, in the context of both uncontrolled and controlled infection. CyTOF and high-dimensional analysis tools have enabled in-depth assessment of specific host antigens remodeled by HIV, and have revealed insights into the features of HIV-infected cells enabling them to survive and persist, and of the immune cells that can respond to and potentially control HIV replication. CyTOF and other related high-dimensional phenotyping approaches remain powerful tools for translational research, and applied HIV to cohort studies can inform on mechanisms of HIV pathogenesis and persistence, and potentially identify biomarkers for viral eradication or control.
