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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...

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Polyfunctional HIV-specific T cells in Post-Treatment Controllers.

Assia Samri¹, Charlin Bacchus-Souffan, Laurent Hocqueloux

¹aINSERM U1135 CIMI bSorbonne Universités, UPMC Univ Paris 06, CIMI, Paris cInfectious and Tropical Diseases Department, Regional Hospital Center, Orléans dUnité HIV, Inflammation et Persistance, Institut Pasteur, Paris eFaculté de Médecine, Université Paris Descartes, Sorbonne Paris-Cité fLaboratoire de Virologie, AP-HP, Hôpital Necker Enfants-Malades gDépartement d'Immunologie, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France.

AIDS (London, England)

|July 19, 2016

Summary

Early HIV treatment preserves crucial CD4 T-cells, aiding long-term viral control in Post-Treatment Controllers (PTCs). This research highlights T-cell responses in managing HIV-1 post-treatment interruption.

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In Vitro Assay to Evaluate the Impact of Immunoregulatory Pathways on HIV-specific CD4 T Cell Effector Function

In Vitro Assay to Evaluate the Impact of Immunoregulatory Pathways on HIV-specific CD4 T Cell Effector Function

Published on: October 15, 2013

Area of Science:

Immunology
Virology
HIV Research

Background:

Exceptional HIV-1 control is observed in Post-Treatment Controllers (PTCs).
Understanding the mechanisms behind this control is crucial for developing effective HIV management strategies.
The Virological and Immunological Sustained CONtrol after Treatment Interruption (VISCONTI) study provides a cohort for investigating sustained viral control.

Purpose of the Study:

To investigate the HIV-specific T-cell responses in Post-Treatment Controllers (PTCs).
To compare T-cell polyfunctionality and CD4 T-cell ratios in different HIV control groups.
To determine if early antiretroviral therapy contributes to sustained HIV control.

Main Methods:

Analysis of HIV-specific CD4 and CD8 T-cell responses.
Assessment of T-cell polyfunctionality.
Evaluation of HIV-specific CD4 T-cell ratios relative to infected cells.

Main Results:

Polyfunctionality of HIV-specific CD4 and CD8 T-cells was similar across PTCs, continuously early-treated patients, and long-term non-progressors.
Ratios of HIV-specific CD4 T-cells per infected cell were also comparable among these groups.
Early antiretroviral therapy appears to maintain robust HIV-specific CD4 T-cell populations.

Conclusions:

Robust HIV-specific CD4 T-cells, potentially preserved by early treatment, may play a role in post-treatment control of HIV-1.
The findings suggest that early intervention strategies could be key in achieving sustained viral suppression.
Further research into T-cell dynamics is warranted for optimizing HIV treatment and cure strategies.