Specific and sensitive nucleic acid detection method

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/68 (2006.01) C07H 21/00 (2006.01) C12Q 1/70 (2006.01) C40B 30/04 (2006.01) C12P 19/34 (2006.01)

Patent

CA 2308368

Method for the detection of a nucleic acid comprising the production of a plurality of amplificates of a section of this nucleic acid with the aid of two primers, one of which can bind to a binding sequence A of the nucleic acid and the other can bind to a binding sequence C' which is complementary to a sequence C which is located in the 3' direction from A and does not overlap with A, contacting the amplificates with a probe having a binding sequence D which can bind to a sequence B which is located between the sequences A and C or to the complement thereof, and detecting the formation of a hybrid of the amplificate and probe where the sequence located between the binding sequences A and C contains no nucleotides that do not belong to the binding sequence D of the probe or its complement D'.

L'invention concerne un procédé pour la détection d'un acide nucléique, consistant à préparer une pluralité de produits d'amplification d'un tronçon de cet acide nucléique à l'aide de deux amorces, dont une peut se fixer à une séquence de liaison A de l'acide nucléique et dont l'autre peut se fixer à une séquence de liaison C' complémentaire d'une séquence C ne chevauchant pas A et située dans le sens 3' de A, à mettre en contact les produits d'amplification avec une sonde présentant une séquence de liaison D, laquelle peut se fixer à une séquence B, située entre les séquences A et C, ou bien à sa séquence complémentaire, et à déceler la formation d'un produit hybride issu du produit d'amplification et de la sonde, la séquence située entre les séquences de liaison A et C ne contenant aucun nucléotide n'appartenant pas à la séquence de liaison D de la sonde ou bien à son complément D'.

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