HIV Persistence in Resting Regulatory CD4 T Cells
Author Information
Author(s): Tran Tu-Anh, de Goër de Herve Marie-Ghislaine, Hendel-Chavez Houria, Dembele Bamory, Le Névot Emilie, Abbed Karim, Pallier Coralie, Goujard Cécile, Gasnault Jacques, Delfraissy Jean-François, Balazuc Anne-Marie, Taoufik Yassine
Primary Institution: INSERM U802, Université Paris 11, Le Kremlin Bicêtre, France
Hypothesis
What role do regulatory T cells play in HIV persistence in patients on long-term effective antiretroviral therapy?
Conclusion
Regulatory T cells are a significant compartment within the HIV reservoir that may require specific strategies for purging.
Supporting Evidence
- Regulatory T cells were found to contain a higher frequency of HIV DNA compared to non-regulatory T cells.
- The half-life of the Treg reservoir was estimated to be 20 months.
- Therapeutics targeting cell quiescence may not effectively purge the Treg reservoir.
- Activated Tregs showed hyporesponsiveness to cell activation.
- Specific CD8+ T-cell cytotoxicity was observed in resting Tregs.
Takeaway
In people with HIV on long-term treatment, a special type of immune cell called regulatory T cells can hide the virus, making it hard to get rid of.
Methodology
The study involved isolating and analyzing resting regulatory T cells from HIV-infected patients on prolonged HAART to assess the presence of HIV DNA.
Potential Biases
Potential biases may arise from the selection of patients who have been on effective therapy for extended periods.
Limitations
The study's findings may not be generalizable to all HIV-infected individuals, as it focused on a specific patient population with long-term viral suppression.
Participant Demographics
Patients were HIV-infected individuals on long-term HAART with undetectable plasma viral loads for at least 2 years.
Statistical Information
P-Value
p=0.002
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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