Methods for detecting nucleic acid sequence variations

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) G01N 33/48 (2006.01)

Patent

CA 2493609

The invention employs an unlabeled signal primer comprising a 5' adapter sequence for detection of variations in nucleic acid target sequences. The detection system further comprises a reporter probe, the 3' end of which hybridizes to the complement of the 5' adapter sequence of the signal primer to produce a 5' overhang. Polymerase is used to fill in the overhang and synthesize the complement of the 5' overhang of the reporter probe. Synthesis of the reporter probe complement is detected, either directly or indirectly, as an indication of the presence of the target.

L'invention concerne une amorce de signal non étiqueté comprenant une séquence adaptateur 5' utilisée pour détecter des variations dans des séquences cibles d'acides nucléiques. Ledit système de détection comprend de plus une sonde rapporteur, son extrémité 3' pouvant s'hybrider au complément de la séquence de l'adaptateur 5' de l'amorce de signal pour produire une avancée 5'. Une polymérase est utilisée pour remplir l'avancée et synthétiser le complément de l'avancée 5' de la sonde rapporteur. La synthèse du complément de la sonde rapporteur est détectée, soit directement soit indirectement, en tant qu'indication de la présence de la cible.

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