Induction of dormant HIV‐1 by sodium butyrateinvolvement of the TATA box in the activation of the HIV‐1 promoter
作者:
Efim Golub,
Gongrong Li,
David Volsky,
期刊:
AIDS
(OVID Available online 1991)
卷期:
Volume 5,
issue 6
页码: 663-668
ISSN:0269-9370
年代: 1991
出版商: OVID
关键词: HIV-1;sodium butyrate;induction;HIV-1 long terminal repeat;TATA box;HIV-1 enhancer
数据来源: OVID
摘要:
Reactivation of latent HIV-1 is believed to play a major role in the pathogenesis of AIDS. Here we show that sodium butyrate (NaB), which can cause gene induction or cell differentiation, reactivates dormant HIV-1in vitroin chronically infected cells of T-lymphoid and monocytoid origin. The effect of NaB on HIV-1 expression in T-lymphoid cells was apparent 3h after addition of drug and peaked at 24 h. During this time the proportion of HIV-1 antigen expressing cells increased from < 0.5 to > 90%, and virus production increased by three orders of magnitude. The virus released by the NaB-induced cells was infectious. The extent and kinetics of NaB effects were similar to effects of phorbol 12-myristate 13-acetate in T cells, but not monocytes. Transient expression assays using an indicator gene under the control of the HIV-1 long terminal repeat revealed that mutations which altered the nucleotide sequence in the TATA box significantly reduced the NaB effect. These data show that NaB is a potent inducer of dormant HIV-1 and suggest that the TATA motif is required for this activity.
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