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This project aims at characterizing HIV-1 viral biofilms structural and functional properties and at deciphering its role as a new viral reservoir and as a new mode of viral spread. The prospective national study will be conducted on cells isolated from blood samples from 20 patients infected with HIV.
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The investigators' preliminary data indicate that besides " free " infectious viral particles, HIV-1 infected cluster of differentiation 4 (CD4+) lymphocytes also produce extracellular viral assemblies wrapped in an extracellular matrix cocoon and tightly bound to the surface of the cell. Importantly, these structures are infectious, transferred to target cells upon intercellular contacts and they are key role in HIV-1 spread between T lymphocytes. HIV-1 viral biofilm could be important not only for direct transmission of the virions but also for " trans-infection ", a process our objectives are:
This project may contribute to decipher the role of viral biofilms in HIV-1 transmission. Ultimately, we intend to determine how the interference of retroviral infections with T cell activation pathways modulates the pattern of ECM production by T cells, tuning viral biofilm composition and regulating viral dissemination.
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Data sourced from clinicaltrials.gov
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