Highly sensitive electrochemical detection of genomic DNA based on stem loop probes structured for magnetic collection and measurement via metalised hollow polyelectrolyte shells.
本文报道了一种基于茎环探针的高灵敏基因组DNA电化学检测方法。该方法在茎环DNA探针上整合两个亚微米寡核苷酸标签:一个用于磁收集,另一个用于伏安检测。磁标签为平均直径441±6 nm的乳胶颗粒,负载磁性Fe3O4颗粒和约3.5×10^5个抗DIG抗体;伏安标签为中空聚电解质壳,内含约1.0×10^11个分散Au原子,以Au纳米颗粒形...