Small Molecule Targeting of Specific BAF (mSWI/SNF) Complexes for HIV Latency Reversal
作者:Christine A. Marian、Mateusz Stoszko、Lili Wang、Matthew W. Leighty、Elisa de Crignis、Chad A. Maschinot、Jovylyn Gatchalian、Benjamin C. Carter、Basudev Chowdhury、Diana C. Hargreaves、Jeremy R. Duvall、Gerald R. Crabtree、Tokameh Mahmoudi、Emily C. Dykhuizen
DOI:10.1016/j.chembiol.2018.08.004
日期:2018.12
The persistence of a pool of latently HIV-1-infected cells despite combination anti-retroviral therapy treatment is the major roadblock for a cure. The BAF (mammalian SWI/SNF) chromatin remodeling complex is involved in establishing and maintaining viral latency, making it an attractive drug target for HIV-1 latency reversal. Here we report a highthroughput screen for inhibitors of BAF-mediated transcription in cells and the subsequent identification of a 12-membered macrolactam. This compound binds ARID1A-specific BAF complexes, prevents nucleosomal positioning, and relieves transcriptional repression of HIV-1. Through this mechanism, these compounds are able to reverse HIV-1 latency in an in vitro T cell line, an ex vivo primary cell model of HIV-1 latency, and in patient CD4+ T cells without toxicity or T cell activation. These macrolactams represent a class of latency reversal agents with unique mechanism of action, and can be combined with other latency reversal agents to improve reservoir targeting.