Combinations of isoform-targeted histone deacetylase inhibitors and bryostatin analogues display remarkable potency to activate latent HIV without global T-cell activation

Sci Rep. 2017 Aug 7;7(1):7456. doi: 10.1038/s41598-017-07814-4.

Abstract

Current antiretroviral therapy (ART) for HIV/AIDS slows disease progression by reducing viral loads and increasing CD4 counts. Yet ART is not curative due to the persistence of CD4+ T-cell proviral reservoirs that chronically resupply active virus. Elimination of these reservoirs through the administration of synergistic combinations of latency reversing agents (LRAs), such as histone deacetylase (HDAC) inhibitors and protein kinase C (PKC) modulators, provides a promising strategy to reduce if not eradicate the viral reservoir. Here, we demonstrate that largazole and its analogues are isoform-targeted histone deacetylase inhibitors and potent LRAs. Significantly, these isoform-targeted HDAC inhibitors synergize with PKC modulators, namely bryostatin-1 analogues (bryologs). Implementation of this unprecedented LRA combination induces HIV-1 reactivation to unparalleled levels and avoids global T-cell activation within resting CD4+ T-cells.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Bryostatins / chemistry
  • Bryostatins / pharmacology*
  • CD4-Positive T-Lymphocytes / immunology
  • Cell Line
  • Depsipeptides / chemistry
  • Depsipeptides / pharmacology
  • Drug Synergism
  • Drug Therapy, Combination
  • HIV-1 / physiology*
  • HeLa Cells
  • Histone Deacetylase 1 / antagonists & inhibitors
  • Histone Deacetylase Inhibitors / chemistry
  • Histone Deacetylase Inhibitors / pharmacology*
  • Humans
  • Jurkat Cells
  • Lymphocyte Activation
  • Molecular Structure
  • Thiazoles / chemistry
  • Thiazoles / pharmacology
  • Virus Activation*
  • Virus Latency / drug effects*

Substances

  • Bryostatins
  • Depsipeptides
  • Histone Deacetylase Inhibitors
  • Thiazoles
  • largazole
  • HDAC1 protein, human
  • Histone Deacetylase 1