Biocompatible Nanoparticles with Aggregation-Induced Emission Characteristics as Far-Red/Near-Infrared Fluorescent Bioprobes for In Vitro and In Vivo Imaging Applications
作者:Wei Qin、Dan Ding、Jianzhao Liu、Wang Zhang Yuan、Yong Hu、Bin Liu、Ben Zhong Tang
DOI:10.1002/adfm.201102191
日期:2012.2.22
(TPE‐TPA‐DCM), is more emissive in the aggregate state, showing the novel phenomenon of aggregation‐induced emission (AIE). Formulation of TPE‐TPA‐DCM using bovine serum albumin (BSA) as the polymer matrix yields uniformly sized protein nanoparticles (NPs) with high brightness and low cytotoxicity. Applications of the fluorogen‐loaded BSA NPs for in vitro and in vivo far‐red/near‐infrared (FR/NIR) bioimaging
聚集体形成减弱了2-(2,6-双((E)-4-(二苯氨基)苯乙烯基)-4 H-吡喃-4-亚烷基)丙二腈(TPA-DCM)的发光。将四苯基乙烯(TPE)单元作为末端连接到TPA-DCM会极大地改变其发射行为:产生的氟2-(2,6-双((E)-4-(苯基(4'-(1,2,2-三苯基乙烯基)-[1,1'-联苯基] -4-基)氨基)苯乙烯基)-4 H吡喃-4-亚甲基丙二腈(TPE-TPA-DCM)在聚集状态下发射率更高,显示出聚集诱导发射(AIE)的新现象。使用牛血清白蛋白(BSA)作为聚合物基质配制TPE-TPA-DCM可产生大小均匀,具有高亮度和低细胞毒性的蛋白质纳米颗粒(NPs)。使用MCF-7乳腺癌细胞和鼠肝癌22(H 22)肿瘤成功地证明了含氟BSA NP在体外和体内远红外/近红外(FR / NIR)生物成像中的应用分别带有轴承的鼠标模型。由于增强的通透性和保留作用,具有AIE活性的负载氟的BSA