Atherosclerotic plaque rupture results in thrombus formation and vessel occlusion, and is the leading cause of death worldwide. There is a pressi ng need to identify plaque vuln erability for the treatment of carotid ...Atherosclerotic plaque rupture results in thrombus formation and vessel occlusion, and is the leading cause of death worldwide. There is a pressi ng need to identify plaque vuln erability for the treatment of carotid and coronary artery diseases. Nano materials with en zyme-like properties have attracted significant interest by providing biological, diagnostic and prognostic information about the diseases. Here we showed that bioe ngin eered mag netoferritin nan oparticles (M-HFn NPs) functionally mimic peroxidase en zyme and can intrin sically recog nize plaque-infiltrated active macrophages, which drive atherosclerotic plaque progression and rupture and are significantly associated with the plaque vulnerability. The M-HFn nanozymes catalyze the oxidation of colorimetric substrates to give a color reaction that visualizes the recognized active macrophages for one-step pathological identification of plaque vulnerability. We examined 50 carotid endarterectomy specimens from patients with symptomatic carotid disease and demonstrated that the M-HFn nanozymes could distinguish active macrophage infiltration in ruptured and high-risk plaque tissues, and M-HFn staining displayed a significant correlation with plaque vulnerability (r= 0.89, P< 0.0001).展开更多
基金National Key R&D Program of China (No. 2017YFA0205501)National Natural Science Foundation of China (Nos. 81722024 and 81571728)+1 种基金Key Research of Frontier Sciences (No. QYZDY-SSW-SMC013)Youth Innovation Promotion Association of Chinese Academy of Sciences (No. 2014078).
文摘Atherosclerotic plaque rupture results in thrombus formation and vessel occlusion, and is the leading cause of death worldwide. There is a pressi ng need to identify plaque vuln erability for the treatment of carotid and coronary artery diseases. Nano materials with en zyme-like properties have attracted significant interest by providing biological, diagnostic and prognostic information about the diseases. Here we showed that bioe ngin eered mag netoferritin nan oparticles (M-HFn NPs) functionally mimic peroxidase en zyme and can intrin sically recog nize plaque-infiltrated active macrophages, which drive atherosclerotic plaque progression and rupture and are significantly associated with the plaque vulnerability. The M-HFn nanozymes catalyze the oxidation of colorimetric substrates to give a color reaction that visualizes the recognized active macrophages for one-step pathological identification of plaque vulnerability. We examined 50 carotid endarterectomy specimens from patients with symptomatic carotid disease and demonstrated that the M-HFn nanozymes could distinguish active macrophage infiltration in ruptured and high-risk plaque tissues, and M-HFn staining displayed a significant correlation with plaque vulnerability (r= 0.89, P< 0.0001).
