ImmunoPET Imaging of αvβ6 Expression Using an Engineered Anti-αvβ6 Cys-diabody Site-Specifically Radiolabeled with Cu-64: Considerations for Optimal Imaging with Antibody Fragments

Purpose Increased expression of the αvβ6 integrin correlates with advanced tumor grade and poor clinical outcome, identifying αvβ6 as a prognostic indicator and an attractive target for molecular imaging. This work investigated the ability of a disulfide-stabilized [64Cu]NOTA-αvβ6 cys-diabody to image αvβ6 expression in vivo using a nu/nu mouse model bearing human melanoma xenografts and positron-emission...