2 条结果 关键词:寡核苷酸探针 ×

Use of a capacitive affinity biosensor for sensitive and selective detection and quantification of DNA-A model study.

Biotechnology reports (Amsterdam, Netherlands) 2014 Mahadhy A, Ståhl-Wernersson E, Mattiasson B, Hedström M

本文报道一种电容式亲和DNA传感器模型体系,用于监测互补单链DNA的捕获。传感器芯片由金电极构成,表面经聚酪胺层仔细绝缘,并通过共价键固定25-聚胞嘧啶寡核苷酸探针。通过注入250 μL样品,可检测低至10^-11 mol/L的目标寡聚鸟嘌呤DNA。采用升温策略降低非特异性杂交:在50 °C下,非目标25-聚胸腺嘧啶寡核苷酸与寡聚胞...

Optimal probe length and target location for electrochemical detection of selected uropathogens at ambient temperature.

Journal of clinical microbiology 2008 Mastali M, Babbitt JT, Li Y, Landaw EM 等 7 人

作者此前已证明DNA生物传感器可快速检测尿路病原菌:捕获探针与检测探针同细菌16S rRNA杂交,在传感器表面形成DNA-RNA夹心;辣根过氧化物酶(HRP)偶联抗体结合检测探针,通过酶促反应放大杂交信号。既往研究采用35-mer寡核苷酸探针并在65°C杂交。为便于床旁检测,本研究考察20–25°C室温杂交下探针长度与靶标位置对信号...