alexa HIV preferentially infects HIV-specific CD4+ T cells.
Infectious Diseases

Infectious Diseases

Journal of AIDS & Clinical Research

Author(s): Douek DC, Brenchley JM, Betts MR, Ambrozak DR, Hill BJ, , Douek DC, Brenchley JM, Betts MR, Ambrozak DR, Hill BJ,

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Abstract HIV infection is associated with the progressive loss of CD4(+) T cells through their destruction or decreased production. A central, yet unresolved issue of HIV disease is the mechanism for this loss, and in particular whether HIV-specific CD4(+) T cells are preferentially affected. Here we show that HIV-specific memory CD4(+) T cells in infected individuals contain more HIV viral DNA than other memory CD4(+) T cells, at all stages of HIV disease. Additionally, following viral rebound during interruption of antiretroviral therapy, the frequency of HIV viral DNA in the HIV-specific pool of memory CD4(+) T cells increases to a greater extent than in memory CD4(+) T cells of other specificities. These findings show that HIV-specific CD4(+) T cells are preferentially infected by HIV in vivo. This provides a potential mechanism to explain the loss of HIV-specific CD4(+) T-cell responses, and consequently the loss of immunological control of HIV replication. Furthermore, the phenomenon of HIV specifically infecting the very cells that respond to it adds a cautionary note to the practice of structured therapy interruption. This article was published in Nature and referenced in Journal of AIDS & Clinical Research

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