HIV Infections Clinical Trial
Official title:
Analysis of the Nasal Mucosal Immune Response in HIV Infection
The principal objective is to define and compare the viral reservoir, mucosal immune responses and the microbiota of different HIV infection stages; viremic, aviremic (under treatment), natural elite controllers; The secondary objective is to compare the mucosal immune response and microbiota of HIV patients with the healthy control population of Milieu Interieur;
Although antiretroviral therapy (ART) efficiently suppresses viral replication HIV persists in CD4+ T cells in a form that is neither targeted by the immune system nor by ART, the complete eradication of replication competent HIV or the establishment of a long term remission state in infected individuals represents an outstanding challenge. The persistence of reservoirs has been mainly linked to the survival and clonal expansion of pools of long lived infected memory CD4+ T cells and to low level viral replication in tissues where ART penetration may be incomplete. One such tissue may be mucosal surfaces which are challenging to study in human populations. As part of the Milieu Interieur project, coordinated by Institut Pasteur, investigators have developed and validated a standardized approach for sampling the nasal mucosa. From this simple sampling procedure it is possible to analyze both the local mucosal host immune response at the proteomic and metabolomic level, and also the mucosal microbial flora. As part of Milieu Interieur investigators have defined these diverse phenotypes for a subset of donors and are currently extending the analysis to the 1,000 healthy donors cohort that will give reference range values for the nasal mucosa. Investigators wish to compare with relevant patient groups, in particular HIV infected individuals to see how infection, treatment, and natural host control may differentially impact the mucosal immune response and viral reservoir ;
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