Strategies for Recognition of Stem−Loop RNA Structures by Synthetic Ligands: Application to the HIV-1 Frameshift Stimulatory Sequence
作者:Prakash B. Palde、Leslie O. Ofori、Peter C. Gareiss、Jaclyn Lerea、Benjamin L. Miller
DOI:10.1021/jm100231t
日期:2010.8.26
Production of the Gag-Pol polyprotein in human immunodeficiency virus (HIV) requires a -1 ribosomal frameshift, which is directed by a highly conserved RNA stern-loop. Building on our discovery of a set of disulfide-containing peptides that bind this RNA, we describe medicinal chemistry efforts designed to begin to understand the structure-activity relationships and RNA sequence-selectivity relationships associated with these compounds. Additionally, we have prepared analogues incorporating an olefin or saturated hydrocarbon bioisostere of the disulfide moiety, as a first step toward enhancing biostability. The olefin-containing compounds exhibit affinity comparable to the lead disulfide and, importantly, have no discernible toxicity when incubated with human fibroblasts at concentrations up to 1 mM.