Showing posts with label triple helix. Show all posts
Showing posts with label triple helix. Show all posts

Saturday, May 19, 2012

Light switch for gene expression with potential use in therapeutics

Scientists from  North Carolina State University have identified light-activated molecules to turn gene expression on and off. Triplex-forming oligonucleotides (TFOs) are commonly used molecules that can prevent gene transcription by binding to double-stranded DNA

A light-activated “cage” was attached to a Triplex-forming oligonucleotides. In the absence of light, transcription activity is 100 percent. When exposed to ultraviolet (UV) light, the cage is