Branch migration-based polymerase chain reaction combined with endonuclease IV-assisted target recycling probe/blocker system for detection of low-abundance point mutations
2020
Sensitive detection of low-abundance point mutations in blood or tissue may provide a great opportunity for the minimally invasive diagnosis of cancer and other related diseases. We demonstrate a novel method for ultra-sensitive detection of point mutations at low abundance by combination of branch migration-based PCR with endonuclease IV-assisted target recycling probe/blocker system. The method is able to identify the point mutations at abundances down to 0.01-0.02%. We anticipate this method to be widely adopted in clinical diagnosis and molecular research.
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