The invention provides methods and materials for use in the detection of influenza viruses which utilise a nanoparticle, for example gold nanoparticule, probe comprising a plurality of glycoconjugate ligands, each glyconjugate ligand (GL) having a plurality of sialic-acid containing recognition group (Y) coupled to the nanoparticle via a multivalent core (X), wherein the multivalent core (X) is a trivalent core, whereby there are 3 recognition groups per ligand, wherein the recognition groups on the bioconjugate specifically bind to the hemagglutinin on the target influenza virus. The probes may include further ligands bound to the nanoparticle which do not bind specifically to an influenza virus – for example polyethylene glycol groups. These can modulate density of the glycoconjugate ligand on the surface of the nanoparticle. Binding of probes is detected by a plasmonic signal which is specific to the influenza virus.
该发明提供了一种用于检测流感病毒的方法和材料,该方法利用纳米颗粒,例如
金纳米颗粒探针,包括多种糖蛋白
配体的
多糖脂蛋白
配体,每个
糖脂蛋白
配体(GL)具有多个含
唾液酸的识别基团(Y),通过多价核心(X)与纳米颗粒结合,其中多价核心(X)是三价核心,因此每个
配体有3个识别基团,
生物共轭物上的识别基团特异性地结合到目标流感病毒的血凝素上。探针还可以包括与纳米颗粒结合的其他不特异结合到流感病毒的
配体,例如聚
乙二醇基团。这些可以调节纳米颗粒表面的糖蛋白
配体密度。通过特异于流感病毒的等离子信号检测探针的结合。