Method for the detection of nucleic acid sequences

C - Chemistry – Metallurgy – 12 – Q

Patent

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C12Q 1/68 (2006.01)

Patent

CA 2318371

The present invention relates to a novel method for the detection of a nucleic acid sequence within a nucleic acid molecule. The method of the invention relies on the combination of nucleic acid protection, ligation of oligonucleotides to the protected nucleic acid molecules and amplification of the ligation products. The detection of the amplified products is advantageously effected by converting the same to the single-stranded form and hybridizing the single-stranded form thereof to an array of single-stranded nucleic acid molecules of at least partially predetermined sequence fixed to a solid support. The solid support is preferably a chip. Detection of hybridized molecules can be effected according to conventional methods. The present invention additionally relates to a kit for carrying out the method of the invention.

L'invention concerne un nouveau procédé de détection d'un séquence nucléotidique au sein d'une molécule d'acide nucléique. Le procédé de l'invention consiste principalement à combiner la protection de l'acide nucléique, la ligature d'oligonucléotides auxdites molécules d'acide nucléique protégées et l'amplification des produits de la ligature. La détection des produits amplifiés s'effectue avantageusement par la conversion de ces derniers, de sorte qu'ils se présentent sous une forme à simple brin, et par l'hybridation de leur forme à simple brin en un réseau de molécules d'acide nucléique simple brin d'au moins une séquence partiellement déterminée, fixée à un support solide. Le support solide est de préférence une pastille. La détection des molécules hybridées peut s'effectuer selon des procédés classiques. L'invention concerne également un kit pour la mise en oeuvre du procédé de l'invention.

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