Molecules can now be designed to target specific small RNAs, opening up a new way to investigate and treat disease © ShutterstockChemists in the US have found a way to predict small molecules that can target short pieces of RNA involved in some diseases, such as cancer. The team’s approach has already met with some success, throwing up a molecule that interferes with a microRNA involved in cancer. This opens up the possibility of treating diseases via a target traditionally seen as ‘undruggable’.MicroRNAs are non-coding lengths of RNA, around 20 nucleotides long, that act as dimmer switches in cells, turning...