Protease Probes Built from DNA: Multispectral Fluorescent DNA-Peptide Conjugates as Caspase Chemosensors
作者:Nan Dai、Jia Guo、Yin Nah Teo、Eric T. Kool
DOI:10.1002/anie.201007805
日期:2011.5.23
A novel design for protease sensors is described, in which peptides are conjugated to a DNA backbone carrying multiple fluorophores. The multispectral oligodeoxyfluoroside (ODF) fluorophores are strongly quenched by a dabcyl group at the end of each peptide. In vitro and cellular selectivity assays showed that a mixture of three sensors could be used to identify different caspase activities by the fluorescence
摇动,而不是搅拌:描述了一种蛋白酶传感器的新设计,其中肽与携带多个荧光团的 DNA 主链结合。多光谱低聚脱氧氟苷 (ODF) 荧光团被每个肽末端的 dabcyl 基团强烈淬灭。体外和细胞选择性测定表明,三种传感器的混合物可用于通过荧光结果识别不同的半胱天冬酶活性(见图)。