Method for the quantification of in vivo nucleic acid levels

C - Chemistry – Metallurgy – 12 – N

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C12N 15/10 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2473613

The invention in particular relates to a method for the quantification of in vivo RNA from a biological sample comprising the steps of: collecting said biological sample in a tube comprising a compound inhibiting RNA degradation and/or gene induction; forming a precipate comprising nucleic acids; separating said precipate from the supernatant; dissolving said precipitate using a buffer, forming a suspension; isolating nucleic acids from said suspension using an automated device; dispersing/distributing a reagent mix for RT-PCR using an automated device; dispersing/distributing the isolated nucleic acids within the dispersed reagent mix using an automated device, and determining the in vivo levels of transcripts using the nucleic acid/RT-PCR reagent mix in an automated setup. The present invention also relates to the quantitatification of DNA from a biological sample. The present invention further elucidates a kit for isolating quantifiable nucleic acids from a biological sample. Applications of the method according to present invention are aldo disclosed.

L'invention concerne particulièrement une méthode de quantification d'ARN in vivo à partir d'un échantillon biologique. Cette méthode consiste : à recueillir ledit échantillon biologique dans un tube comprenant un composé inhibant la dégradation de l'ARN et/ou l'induction génétique ; à former un précipité comprenant des acides nucléiques ; à séparer ce précipité du surnageant ; à dissoudre ce précipité à l'aide d'un tampon, formant ainsi une suspension ; à isoler les acides nucléiques de cette suspension à l'aide d'un dispositif automatisé ; à disperser/distribuer un mélange réactif destiné à la méthode RT-PCR à l'aide d'un dispositif automatisé ; à disperser/distribuer les acides nucléiques isolés dans le mélange réactif dispersé à l'aide d'un dispositif automatisé et à déterminer les taux in vivo de transcripts à l'aide du mélange réactif acide nucléique/RT-PCR dans un montage automatisé. L'invention concerne également la quantification d'ADN issu d'un échantillon biologique ainsi qu'une trousse permettant d'isoler des acides nucléiques quantifiables issus d'un échantillon biologique. L'invention concerne enfin des applications de la méthode selon l'invention.

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