Transcriptional Reprogramming during Effector-to-Memory Transition Renders CD4+ T Cells Permissive for Latent HIV-1 Infection.
Immunity
; 47(4): 766-775.e3, 2017 10 17.
Article
en En
| MEDLINE
| ID: mdl-29045905
ABSTRACT
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.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Transcripción Genética
/
Linfocitos T CD4-Positivos
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VIH-1
/
Reprogramación Celular
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Memoria Inmunológica
Límite:
Female
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Humans
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Male
Idioma:
En
Revista:
Immunity
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Estados Unidos