The present invention provides compositions, apparatuses and methods for detecting one or more nucleic acid targets present in a sample. Methods of the invention include utilizing two or more oligonucleotide probes that reversibly bind a target nucleic acid in close proximity to each other and possess complementary reactive ligation moieties. When such probes have bound to the target in the proper orientation, they are able to undergo a spontaneous chemical ligation reaction that yields a ligated oligonucleotide product. In one aspect, the ligation product is of variable length that correlates with a particular target. Following chemical ligation, the probes may be amplified and detected by capillary electrophoresis or microarray analysis.
本发明提供了用于检测样品中存在的一种或多种
核酸靶标的组合物、装置和方法。本发明的方法包括利用两个或多个寡
核苷酸探针,这些探针可逆地与靶
核酸紧密结合,并具有互补的反应性连接分子。当这些探针以适当的方向与靶核结合后,它们就能发生自发的
化学连接反应,产生连接的寡
核苷酸产物。在一个方面,连接产物的长度是可变的,与特定的靶标相关。
化学连接后,探针可通过毛细管电泳或芯片分析进行扩增和检测。