Method of isolating rna

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/68 (2006.01) C07H 21/00 (2006.01) C12M 3/02 (2006.01) C12N 15/10 (2006.01) C12P 19/34 (2006.01)

Patent

CA 2293820

The present invention provides a method for isolating RNA from a biological material comprising RNA and contaminants, wherein: the biological material is disrupted in the presence of a chaotropic agent, the resulting lysate is diluted to precipitate out contaminants, and the precipitate is removed from the lysate. RNA is preferably isolated from the resulting cleared lysate, using a silica matrix to bind and then release RNA bound thereto under particular conditions. The present invention also provides a method for isolating RNA from a solution comprising RNA and DNA, wherein: the RNA and DNA are bound to a silica matrix in the presence of at least one binding enhancer, the DNA is digested with DNase, and the RNA eluted therefrom.

La présente invention concerne un procédé d'isolement d'ARN d'une matière biologique renfermant de l'ARN et des contaminants, dans lequel la matière biologique est rompue en présence d'un agent chaotropique; le lysat obtenu est dilué afin de précipiter les contaminants; et le précipité est retiré du lysat. L'ARN est de préférence isolé du lysat épuré à l'aide d'une matrice de silice servant à fixer, puis à libérer l'ARN lié à celle-ci dans des conditions particulières. La présente invention concerne également un procédé d'isolement d'ARN d'une solution renfermant de l'ARN et de l'ADN, dans lequel l'ARN et l'ADN sont liés à une matrice de silice en présence d'au moins un activateur de fixation; l'ADN est digérée à l'aide de DNase, et l'ARN est éluée du complexe.

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