Owing to the high morbidity and mortality of cardiovascular diseases resulting from atherosclerosis, developing specific noninvasive diagnostic methods to distinguish vulnerable atherosclerotic plaques becomes urgent and mandatory. Herein, scavenger receptors AI (SR-AI), a secreted biomarker associated with foam macrophages, was selected as a target for identifying vulnerable plaques. A dual-modality imaging probe (PP1-Au@GSH@Gd NCs) was constructed by covalently attaching a peptidic SR-AI ligand, PP1 to gadolinium-integrated gold nanoclusters, which exhibited remarkably improved fluorescence signal and longitudinal relaxivity with highly loaded Au and Gd species.
View Article and Find Full Text PDF