Role of Different Subpopulations of CD8+ T Cells during HIV Exposure and Infection
ABSTARCT: During HIV infection, specific responses exhibited by CD8+ T cells are crucial to establish an early, effective, and sustained viral control, preventing severe immune alterations and organ dysfunction. Several CD8+ T cells subsets have been identified, exhibiting differences in terms of ac...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2017 |
| Country: | Colombia |
| Institution: | Universidad de Antioquia |
| Repository: | Repositorio UdeA |
| Language: | English |
| OAI Identifier: | oai:bibliotecadigital.udea.edu.co:10495/11509 |
| Online Access: | http://hdl.handle.net/10495/11509 |
| Access Level: | Open access |
| Keyword: | Antiviral immune response HIV infection Resistance to HIV HIV control CD8+ T cells Human immunodeficiency viruses |
| Summary: | ABSTARCT: During HIV infection, specific responses exhibited by CD8+ T cells are crucial to establish an early, effective, and sustained viral control, preventing severe immune alterations and organ dysfunction. Several CD8+ T cells subsets have been identified, exhibiting differences in terms of activation, functional profile, and ability to limit HIV replication. Some of the most important CD8+ T cells subsets associated with viral control, production of potent antiviral molecules, and strong polyfunctional responses include Th1-like cytokine pattern and Tc17 cells. In addition, the expression of specific activation markers has been also associated with a more effective response of CD8+ T cells, as evidenced in HLA-DR+ CD38- cells. CD8+ T cells in both, peripheral blood and gut mucosa, are particularly important in individuals with a resistant phenotype, including HIV-exposed seronegative individuals (HESNs), long-term non-progressors (LTNPs) and HIV-controllers. Although the role of CD8+ T cells has been extensively explored in the context of an established HIV-1 infection, the presence of HIV-specific cells with effector abilities and a defined functional profile in HESNs, remain poorly understood. Here, we reviewed studies carried out on different subpopulations of CD8+ T cells in relation with natural resistance to HIV infection and progression. Keywords: CD8+ T cells subpopulations, HIV infection, Natural resistance to HIV, spontaneous control of HIV replication, antiviral immune response |
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