HIV-1 RNA Retention in Resting T Cells
Author Information
Author(s): Kara G. Lassen, Ramyar K. X., Justin R. Bailey, Yan Zhou, Robert F. Siliciano
Primary Institution: Johns Hopkins University School of Medicine
Hypothesis
How does the nuclear retention of multiply spliced HIV-1 RNA affect latency in resting CD4+ T cells?
Conclusion
Overexpression of the protein PTB can reverse HIV-1 latency in resting CD4+ T cells and induce virus production without activating the cells.
Supporting Evidence
- MS HIV-1 RNAs were found to be retained in the nucleus of resting CD4+ T cells.
- Overexpression of PTB allowed for the release of replication-competent virus.
- PTB did not induce cellular activation while promoting virus production.
Takeaway
HIV-1 can hide in resting immune cells, and a special protein can help it escape hiding and start making more virus.
Methodology
Proteomic analysis was used to identify proteins binding to MS HIV-1 RNA, and PTB was overexpressed in resting CD4+ T cells to assess its effect on virus production.
Limitations
The study primarily focused on a small fraction of cells harboring replication-competent virus, which may not fully represent the entire population.
Participant Demographics
Asymptomatic, HIV-1-infected adults on HAART for at least 6 months.
Digital Object Identifier (DOI)
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