The invention provides methods and diagnostic test kits for detecting target nucleic acid sequence variations in a sample. In particular, a plurality of oligonucleotide probe sets is provided. Each set has a target specific portion and a barcode. The target specific portions of the probes are suitable for ligation together when hybridized adjacent to one another on a corresponding target polynucleotide. The ligated product contains a barcode that binds to a probe attached to a substrate and hence facilitate the capture of the ligated product on the solid support. Detection is carried out with a gold nanoparticle-attached barcode that hybridizes with the barcode on the ligated product.
该发明提供了一种用于检测样本中目标核酸序列变异的方法和诊断试剂盒。具体来说,提供了多个寡核苷酸探针组。每个组具有一个目标特异部分和一个条形码。当探针的目标特异部分在相应的目标多核苷酸上相邻杂交时,这些探针的目标特异部分适合进行连接。连接的产物包含一个与基质上附着的探针结合的条形码,从而有助于在固体支持上捕获连接的产物。检测是通过与连接的产物上的条形码杂交的
金纳米颗粒附着的条形码进行的。