Enhanced nuclear accumulation of pyrrole–imidazole polyamides by incorporation of the tri-arginine vector†
Abstract
The tri-arginine moiety enhanced nuclear accumulation of a 12-ring pyrrole–imidazole polyamide (PIP) without compromising sequence-selectivity and achieved efficient repression of SOX2-downstream genes and HER2 transcription in live cells. This simple vector expands the application of long PIPs in live cells by overcoming the compound delivery problems associated with them.