ReferenceID 3524

Reactivation of latent HIV-1 by inhibition of BRD4

Cell Rep

HIV-1 depends on many host factors for propagation. Other host factors, however, antagonize HIV-1 and may have profound effects on viral activation. Curing HIV-1 requires the reduction of latent viral reservoirs that r

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Reference Id
3524
Evidence Id
20114
Core Evidence Id
20114
Source Reference Id
352
Herb2 Reference Id
HBREF000643
Subject Paper Key
HBIN040889_23041316
Pubmed Id
23041316
Doi
10.1016/j.celrep.2012.09.008
Paper Title
Reactivation of latent HIV-1 by inhibition of BRD4
Paper Abstract
HIV-1 depends on many host factors for propagation. Other host factors, however, antagonize HIV-1 and may have profound effects on viral activation. Curing HIV-1 requires the reduction of latent viral reservoirs that remain in the face of antiretroviral therapy. Using orthologous genetic screens, we identified bromodomain containing 4 (BRD4) as a negative regulator of HIV-1 replication. Antagonism of BRD4, via RNA interference or with a small molecule inhibitor, JQ1, both increased proviral transcriptional elongation and alleviated HIV-1 latency in cell-line models. In multiple instances, JQ1, when used in combination with the NF-κB activators Prostratin or PHA, enhanced the in vitro reactivation of latent HIV-1 in primary T cells. These data are consistent with a model wherein BRD4 competes with the virus for HIV-1 dependency factors (HDFs) and suggests that combinatorial therapies that activate HDFs and antagonize HIV-1 competitive factors may be useful for curing HIV-1 infection.
Journal
Cell Rep
Publish Year
2012
Experiment Subject
j-lat cell line, human cd4 t cell
Experiment Type
Cell Experiment
Phenotype Related
Paper Title Cn
Paper Title En
Reactivation of latent HIV-1 by inhibition of BRD4
Bilingual Status
semi_complete