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HLA Class-II Associated HIV Polymorphisms Predict Escape from CD4+ T Cell Responses


In HIV, CD4+ T cells are best known as the primary targets of infection. Although emerging data has suggested a more active role in viral pathogenesis, the CD4+ T cell population remains relatively understudied. Using a novel computational approach, we predicted 29 different epitopes with mutations that potentially represent escape from CD4+ T cell responses. The predicted escaped epitopes were found to be less immunogenic than the wild type forms, suggesting that the identified escapes allow HIV to reduce its visibility to the immune system. Using longitudinal samples, we were able to show CD4+ T cells driving viral escape following acute infection. Overall, these findings significantly expand our knowledge of how CD4+ T cells can exert HIV control and influence HIV evolution, providing important implications to future vaccine development strategies.


Vyšlo v časopise: HLA Class-II Associated HIV Polymorphisms Predict Escape from CD4+ T Cell Responses. PLoS Pathog 11(8): e32767. doi:10.1371/journal.ppat.1005111
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1005111

Souhrn

In HIV, CD4+ T cells are best known as the primary targets of infection. Although emerging data has suggested a more active role in viral pathogenesis, the CD4+ T cell population remains relatively understudied. Using a novel computational approach, we predicted 29 different epitopes with mutations that potentially represent escape from CD4+ T cell responses. The predicted escaped epitopes were found to be less immunogenic than the wild type forms, suggesting that the identified escapes allow HIV to reduce its visibility to the immune system. Using longitudinal samples, we were able to show CD4+ T cells driving viral escape following acute infection. Overall, these findings significantly expand our knowledge of how CD4+ T cells can exert HIV control and influence HIV evolution, providing important implications to future vaccine development strategies.


Zdroje

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Hygiena a epidemiológia Infekčné lekárstvo Laboratórium

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