An atom-economical design of PET tracer for imaging αvβ3 integrin via utilizing the three-in-one function of 64Copper†
Abstract
In this study, αvβ3 integrin in U87 tumor cells was imaged with a 64Cu-peptidic probe, in which the linear peptide GHRGDHG is used as a pre-ligand, while 64Cu bears three functional roles that include generation of the PET signal, coordination with two GH moieties of the pre-ligand, and cyclizing the linear pre-ligand into an active cyclic-RGD form (termed as 64Cu-Cyclo-RGD) for αvβ3 integrin.