Method and apparatus for dna extraction

C - Chemistry – Metallurgy – 12 – N

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C12N 15/10 (2006.01) B01L 3/00 (2006.01) C07H 1/08 (2006.01) C07H 21/04 (2006.01) C12M 1/12 (2006.01) C12M 3/06 (2006.01) C12Q 1/68 (2006.01) G01N 1/28 (2006.01) G01N 1/34 (2006.01)

Patent

CA 2223896

Methods and apparatus for the extraction of DNA from a suspension of cells are described. The methods utilise a hollow membrane filter to separate DNA from cellular debri after lysis of cells. The suspension of cells can be a suspension of cultured cells or cells contained in a body fluid such as blood. An ion-exchange step can be included in methods so that purified DNA is provided. The apparatus (1) comprises a vessel (2) in which cells can be cultured. The vessel has a hollow membrane filter (5) associated with an end thereof. The described methods can be used for extracting genomic DNA from cells but are particularly suitable for extracting plasmid DNA from microorganisms.

L'invention concerne des procédés et des appareils d'extraction de l'ADN contenu dans une suspension de cellules. Selon les procédés décrits, on utilise un filtre à fibres creuses pour séparer l'ADN des débris cellulaires après la lyse des cellules. La suspension de cellules peut être une suspension de cellules cultivées ou de cellules contenues dans un liquide biologique tel que le sang. On peut inclure une étape d'échange d'ions dans les procédés d'extraction afin d'obtenir de l'ADN purifié. L'appareil (1) comprend un récipient (2) de culture des cellules. Un filtre à fibres creuses (5) est associé à une extrémité du récipient (2). On peut utiliser les procédés décrits pour extraire l'ADN génomique des cellules mais ces procédés se prêtent surtout bien à l'extraction d'ADN de plasmides de micro-organismes.

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