Novel RNA Duplex Locks HIV-1 in a Latent State via Chromatin-mediated Transcriptional Silencing.

ABSTRACT: Transcriptional gene silencing (TGS) of mammalian genes can be induced by short interfering RNA (siRNA) targeting promoter regions. We previously reported potent TGS of HIV-1 by siRNA (PromA), which targets tandem NF-κB motifs within the viral 5'LTR. In this study, we screened a siRNA panel with the aim of identifying novel 5'LTR targets, to provide multiplexing potential with enhanced viral silencing and application toward developing alternate therapeutic strategies. Systematic examination identified a novel siRNA target, si143, confirmed to induce TGS as the silencing mechanism. TGS was prolonged with virus suppression >12 days, despite a limited ability to induce post- TGS. Epigenetic changes associated with silencing were suggested by partial reversal by histone deacetylase inhibitors

SUBMITTER: Ahlenstiel C 

PROVIDER: S-EPMC4881759 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature