Study on B7-H3 Targeted Affibody Radioligand Probes for PET Imaging of Solid Tumors

An affibody structure specifically targeting B7H3 was developed based on the B7H3 binding domain, and it was structurally optimized to yield a small molecular agent, B7H3 Affibody-BCH, suitable for nuclear medical diagnostic and therapeutic uses targeting B7H3. By labeling with the radioactive isotope \^68Ga, this agent can be used for PET/CT diagnosis of solid tumors.