System for charge-based detection of nucleic acids

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01)

Patent

CA 2544476

This present invention relates methods for detecting the presence of nucleic acids in a sample. In these methods, neutral capture probes are exposed to a sample possibly containing complementary nucleic acid targets. The foregoing mixture is submitted to conditions that provide for the nucleic acid targets to bind with the neutral probes thereby generating hybrids. These hybrids are submitted to positively charged reporters such as atoms, molecules or macromolecules, which electrostatically bind to the hybrids. The complexes formed between reporters and hybrids are detected by a variety of detection methods. Kits for detecting the presence of nucleic acids in a sample are also disclosed herein.

L'invention concerne des procédés destinés à détecter la présence d'acides nucléiques dans un échantillon. Dans ce procédé, des sondes de capture neutres sont exposées à un échantillon contenant éventuellement des cibles d'acides nucléiques complémentaires. Le mélange qui précède est soumis à des conditions permettant aux cibles d'acides nucléiques de se lier à des sondes neutres générant ainsi des hybrides. Ces hybrides sont soumis à des rapporteurs chargés positivement tels que des atomes, des molécules ou des macromolécules, qui se lient de façon électrostatique aux hybrides. Les complexes formés entre les rapporteurs et les hybrides sont détectés par une variété de procédé de détection. Les nécessaires destinés à détecter la présence d'acides nucléiques dans un échantillon sont également décrits.

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