A METHOD FOR DETECTION OF TARGET NUCLEIC ACID USING ISOTHERMAL AMPLIFICATION

    公开(公告)号:US20240209462A1

    公开(公告)日:2024-06-27

    申请号:US18577860

    申请日:2022-07-12

    摘要: Various embodiments relate generally to the field of nucleic acid amplification and detection, in particular isothermal nucleic acid amplification and the detection of the amplicons using designated detection probes. Moreover, various embodiments also relate to methods for determining the presence or quantity of a target nucleic acid molecule in a sample using isothermal amplification. The detection probe is a single-stranded probe that recognises a probe binding site within target amplicons. The detection probe comprises at least one 3′end nucleotide mismatch and a quencher-fluorophore pair at the opposite ends of the probe. Following hybridization of the detection probe to the target amplicons, a DNA polymerase with 3′-5′ exonuclease activity can cleave the detection probe at the 3′ end nucleotide mismatch to release a 3′-terminal probe fragment comprising the quencher or fluorophore, thus generating signals.