At long last, macrocycles are spinning into the spotlight.
On Thursday, Orbis Medicines launched with €26 million in seed funding from European VC fund Forbion and Novo Holdings, the investment arm of Novo Nordisk’s parent foundation. The startup is focused on developing peptide drugs based on macrocycles, which are small chemical rings.
Most macrocycle drugs, such as cyclosporine or a component of Neosporin, have been discovered in nature, but the molecules were for a long time left on the sidelines by drug developers because they had difficulty passing through membranes, an important quality for many pill-based medicines. However, recent advances in designing peptides have shown it’s possible to overcome that obstacle and have rekindled interest in the potential for macrocyclic medicines.