Detection of single nucleotide polymorphisms using planar...

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01)

Patent

CA 2473558

The present invention relates to a method of detecting single nucleotide polymorphisms in a gene of interest. A plurality of probes is immobilized on a planar waveguide. The probes comprise sequences complementary to a wildtype sequence of the gene of interest and complementary to a sequence of a known SNP in the gene of interest. A fluorescently-labeled analyte is flowed over the planar waveguide. The binding between the labeled analyte and each of the probes causes a change in the fluorescence signal. The SNP is detected by comparing the hybridization kinetics of the analyte with each of the probes. A method of detecting single nucleotide polymorphisms in a gene of interest by sequencing by hybridization is also disclosed.

La présente invention concerne une méthode de détection de polymorphismes de nucléotide simple dans un gène d'intérêt. Une pluralité de sondes sont immobilisées sur un guide d'ondes planaire. Les sondes comprennent des séquences complémentaires d'une séquence d'un SNP connu dans le gène d'intérêt. Un analyte marqué par fluorescence s'écoule sur le guide d'ondes planaire. La liaison entre l'analyte marqué et chacune des sondes provoque un changement dans le signal fluorescent. Le SNP est détecté par comparaison de la cinétique d'hybridation de l'analyte à chacune des sondes. L'invention concerne également une méthode de détection de polymorphismes de nucléotide simple dans un gène d'intérêt par séquençage par hybridation.

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