[PDF][PDF] Transcriptional reprogramming during effector-to-memory transition renders CD4+ T cells permissive for latent HIV-1 infection

L Shan, K Deng, H Gao, S Xing, AA Capoferri… - Immunity, 2017 - cell.com
Immunity, 2017cell.com
The latent reservoir for HIV-1 in resting memory CD4+ T cells is the major barrier to curing
HIV-1 infection. Studies of HIV-1 latency have focused on regulation of viral gene expression
in cells in which latent infection is established. However, it remains unclear how infection
initially becomes latent. Here we described a unique set of properties of CD4+ T cells
undergoing effector-to-memory transition including temporary upregulation of CCR5
expression and rapid downregulation of cellular gene transcription. These cells allowed …
Summary
The latent reservoir for HIV-1 in resting memory CD4+ T cells is the major barrier to curing HIV-1 infection. Studies of HIV-1 latency have focused on regulation of viral gene expression in cells in which latent infection is established. However, it remains unclear how infection initially becomes latent. Here we described a unique set of properties of CD4+ T cells undergoing effector-to-memory transition including temporary upregulation of CCR5 expression and rapid downregulation of cellular gene transcription. These cells allowed completion of steps in the HIV-1 life cycle through integration but suppressed HIV-1 gene transcription, thus allowing the establishment of latency. CD4+ T cells in this stage were substantially more permissive for HIV-1 latent infection than other CD4+ T cells. Establishment of latent HIV-1 infection in CD4+ T could be inhibited by viral-specific CD8+ T cells, a result with implications for elimination of latent HIV-1 infection by T cell-based vaccines.
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