Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/99834
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Type: Journal article
Title: CNS-specific regulatory elements in brain-derived HIV-1 strains affect responses to latency-reversing agents with implications for cure strategies
Author: Gray, L.
Cowley, D.
Welsh, C.
Lu, H.
Brew, B.
Lewin, S.
Wesselingh, S.
Gorry, P.
Churchill, M.
Citation: Molecular Psychiatry, 2016; 21(4):574-584
Publisher: Nature Publishing Group: Open Access Hybrid Model Option B
Issue Date: 2016
ISSN: 1359-4184
1476-5578
Statement of
Responsibility: 
LR Gray, D Cowley, C Welsh, HK Lu, BJ Brew, SR Lewin, SL Wesselingh, PR Gorry, and MJ Churchill
Abstract: Latency-reversing agents (LRAs), including histone deacetylase inhibitors (HDACi), are being investigated as a strategy to eliminate latency in HIV-infected patients on suppressive antiretroviral therapy. The effectiveness of LRAs in activating latent infection in HIV strains derived from the central nervous system (CNS) is unknown. Here we show that CNS-derived HIV-1 strains possess polymorphisms within and surrounding the Sp transcription factor motifs in the long terminal repeat (LTR). These polymorphisms result in decreased ability of the transcription factor specificity protein 1 to bind CNS-derived LTRs, reducing the transcriptional activity of CNS-derived viruses. These mutations result in CNS-derived viruses being less responsive to activation by the HDACi panobinostat and romidepsin compared with lymphoid-derived viruses from the same subjects. Our findings suggest that HIV-1 strains residing in the CNS have unique transcriptional regulatory mechanisms, which impact the regulation of latency, the consideration of which is essential for the development of HIV-1 eradication strategies.
Keywords: Central Nervous System; Brain; CD4-Positive T-Lymphocytes; Jurkat Cells; Humans; HIV-1; HIV Infections; Hydroxamic Acids; Indoles; Depsipeptides; Cohort Studies; Virus Latency; Terminal Repeat Sequences; Polymorphism, Genetic; Adult; Middle Aged; Male; Transcriptional Activation; Histone Deacetylase Inhibitors
Rights: © 2016 Macmillan Publishers Limited All rights reserved
RMID: 0030039013
DOI: 10.1038/mp.2015.111
Grant ID: http://purl.org/au-research/grants/nhmrc/1051093
Appears in Collections:Medicine publications

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