The invention concerns methods for detecting a nucleic acid of interest in a solution comprising (a) contacting a solution suspected of containing the nucleic acid of interest with a PNA capture probe and a PNA reporter probe; wherein (i) the PNA capture probe comprises at least two trans-cyclopentanes; (ii) the PNA reporter probe comprises at least six biotin groups; (iii) the PNA capture probe bound to a surface; and (iv) the PNA capture probe and the PNA reporter probe each comprise a nucleobase sequence that is complementary to different non-overlapping portions of the nucleic acid of interest; (b) detecting the presence of the PNA capture probe and the PNA reporter probe bound to the surface; wherein the nucleic acid of interest is detected when 1-1000 molecules of the nucleic acid of interest are present in the solution being tested.
本发明涉及检测溶液中感兴趣的核酸的方法,包括(a)将怀疑含有感兴趣的核酸的溶液与
PNA捕获探针和
PNA报告探针接触;其中(i)
PNA捕获探针包括至少两个反式
环戊烷;(ii)
PNA报告探针包括至少六个
生物素基团;(iii)
PNA捕获探针结合到表面;(iv)
PNA 捕获探针和
PNA 报告探针各自包括与所要检测的核酸的不同非重叠部分互补的核碱基序列; (b) 检测与表面结合的
PNA 捕获探针和
PNA 报告探针的存在;其中,当被测溶液中存在 1-1000 个分子的所要检测的核酸时,检测所要检测的核酸。