Gold drug auranofin restricts the viral reservoir in the monkey AIDS model and induces containment of viral load following ART suspension
| Autor: | Lewis, Mark G., Sandrina, Dafonseca, Chamont, N., Nicolas, Chomont, Palamara, ANNA TERESA, Tardugno, Maria, Mai, Antonello, Matt, Collins, Wagner, Wendeline L., Jake Yalley Ogunro, Jack, Greenhouse, Barbara, Chirullo, Sandro, Norelli, Enrico, Garaci, Andrea, Savarino |
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| Rok vydání: | 2011 |
| Předmět: |
CD4-Positive T-Lymphocytes
Auranofin Immunology Simian Acquired Immunodeficiency Syndrome Pilot Projects Treatment Outcome DNA Viral Simian immunodeficiency virus Animals Virus Replication Virus Latency Antirheumatic Agents Viral Load Anti-Retroviral Agents Macaca mulatta Biology reservoir therapy suspension sivmac251 eradication viral dna remission central memory Emtricitabine Flow cytometry In vivo medicine Immunology and Allergy Viral Darunavir medicine.diagnostic_test DNA Settore MED/07 - Microbiologia e Microbiologia Clinica Raltegravir Virology Infectious Diseases Viral disease Viral load medicine.drug |
| Zdroj: | AIDS. 25:1347-1356 |
| ISSN: | 0269-9370 |
| Popis: | Objectives: A small pool of long-lived memory CD4 + T cells harboring the retroviral genome is one main obstacle to HIV eradication. We tested the impact of the gold compound, auranofin, on phenotype and viability of CD4 + T cells in vitro, and on persistence of lentiviral reservoir cells in vivo. Design: In-vitro and in-vivo study. The pro-differentiating effect of auranofin was investigated in human primary CD4 + T cells, and its capacity to deplete the viral DNA (vDNA) reservoir was tested in a pilot study involving six SIVmac251-infected macaques with viral loads stably suppressed by antiretroviral therapy (ART) (tenofovir/ emtricitabine/raltegravir). The study was then amplified by intensifying ART using darunavir/r and including controls under intensified ART alone. All therapies were eventually suspended and viro-immunological parameters were monitored over time. Methods: Cell subpopulations were quantitated by flow cytometry following proper hematological analyses. Viral load and cell-associated vDNA were quantitated by Taqman real-time PCR. Results: In naive, central memory and transitional memory CD4 + T cells, auranofin induced both phenotype changes and cell death which were more pronounced in the memory compartment. In the pilot study in vivo, auranofin transiently decreased the cell-associated vDNA reservoir in peripheral blood. When ART was intensified, a sustained decrease in vDNA was observed only in auranofin-treated monkeys but not in controls treated with intensified ART alone. After therapy suspension, only monkeys that had received auranofin showed a deferred and subsequently blunted viral load rebound. Conclusion: These findings represent a first step towards a remission of primate lentiviral infections. |
| Databáze: | OpenAIRE |
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