Platelet Membrane-Coated Nanocarriers Targeting Plaques to Deliver Anti-CD47 Antibody for Atherosclerotic Therapy  

作　　者：Liang Chen Zhongyi Zhou Cheng Hu Manfred F.Maitz Li Yang Rifang Luo Yunbing Wang 

机构地区：[1]National Engineering Research Center for Biomaterials,Sichuan University,Chengdu 610065,China [2]Max Bergmann Center of Biomaterials,Leibniz Institute of Polymer Research Dresden,Dresden 01069,Germany [3]Key Lab.for Advanced Technologies of Materials,Ministry of Education,School of Material Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China

出　　处：《Research》2022年第3期1-12,共12页研究（英文）

基　　金：the Sichuan Science and Technology Program(2021YFH0011);the National Key Research and Development Program(2016YFC1102200);the China Postdoctoral Science Foundation(2018T110976,2017M612967);the National Natural Science Foundation of China(No.51703144);the Sichuan Science and Technology Major Project(2018SZDZX0011);the Postdoctoral interdisciplinary program(0900904153015);the 111 Project(The Program of Introducing Talents of Discipline to Universities(B16033)).

摘　　要：Atherosclerosis,the principle cause of cardiovascular disease(CVD)worldwide,is mainly characterized by the pathological accumulation of diseased vascular cells and apoptotic cellular debris.Atherogenesis is associated with the upregulation of CD47,a key antiphagocytic molecule that is known to render malignant cells resistant to programmed cell removal,or“efferocytosis.”Here,we have developed platelet membrane-coated mesoporous silicon nanoparticles(PMSN)as a drug delivery system to target atherosclerotic plaques with the delivery of an anti-CD47 antibody.Briefly,the cell membrane coat prolonged the circulation of the particles by evading the immune recognition and provided an afinity to plaques and atherosclerotic sites.The anti-CD47 antibody then normalized the clearance of diseased vascular tissue and further ameliorated atherosclerosis by blocking CD47.In an atherosclerosis model established in ApoE^(-/-)mice,PMSN encapsulating anti-CD47 antibody delivery significantly promoted the efferocytosis of necrotic cells in plaques.Clearing the necrotic cells greatly reduced the atherosclerotic plaque area and stabilized the plaques reducing the risk of plaque rupture and advanced thrombosis.Overall,this study demonstrated the therapeutic advantages of PMSN encapsulating anti-CD47 antibodies for atherosclerosis therapy,which holds considerable promise as a new targeted drug delivery platform for efficient therapy of atherosclerosis。

关 键 词：CD47 ANTIBODY holds 

分 类 号：R543[医药卫生—心血管疾病] TB383[医药卫生—内科学]